Slide Deck

⚡ Kimi’s Take

This block is Kimi’s own subjective opinion and general information only — an independent analyst’s view, not investment advice. The analysis in the numbered sections below carries no recommendation and no price target; this section, and only this section, takes a position.

HOLD — do not add at $57.96; emphatically not a short. Tenaris is the best franchise in OCTG and arguably the best-managed steel-adjacent cyclical in the world: positive EBITDA margins through the 2015-16 and 2020 troughs while Vallourec restructured twice, $3.8B of net cash plus $1.56B of associate stakes, two decades of clean family stewardship, ~$3.1B of buybacks executed at an average of ~$36/ADS and every share cancelled, and a 3.1% dividend yield that has more than doubled since FY2021. That is all real. The problem is that the market has stopped charging a discount for it. At $57.96 the ~$25.5B enterprise value, at a warranted through-cycle multiple of ~8x, capitalizes roughly $3.2B of EBITDA — FY2024-level ~25% margins treated as permanent. My mid-cycle estimate is ~$2.4B of EBITDA and ~$2.90 of EPS per ADS, which brackets fair value at $50-62. The stock trades inside its own base case, at the 95.6th percentile of its own price-to-book history, +123% off the April 2025 low, with zero margin of safety. Worse, an estimated $300-600M of that EBITDA is Section-232 tariff rent — reversible policy, not structure — and a rollback alone (no recession needed) implies $29-36/ADS. The quiet tell is the controller’s behavior: Techint sold 23.6M shares between December 2025 and February 2026 — its first sale in five years — and the buyback program was terminated early with no fourth program announced. The people who know the mid-cycle math best are not buying at $58. Q2-26 results land tomorrow (2026-08-06) with Hormuz-depressed guidance — a binary near-term event.

Framing: a quality cyclical at a full price — not a crowded momentum trade (Momentum factor loading only +0.08) and not a falling knife. The factor model prices TS as an oil-price proxy (loading +0.94) with a value/dividend-yield tilt, and its dominant factor regime — the oil leg — has stalled over the last quarter while the stock sits −10% off an all-time adjusted high. Directional zone: interesting below ~$45-48, where you pay ~7-8x mid-cycle EBITDA with the tariff rent zeroed and get the franchise, the net cash, and the buyback record for free. Conviction: MEDIUM. Bullish flip trigger: the Q2’26 print shows Middle East volume recovery plus a fourth buyback program plus Tubes margins ≥24% sustained — the bull path to $70-84. Bearish flip trigger: a Section 232 rollback or an OCTG price roll that confirms the $29-36 tariff-rent-reversal path.

Tagline: the best house in a cyclical neighborhood, priced as if the neighborhood were gated.

---

📈 Stock Price Action — Five-Year Event Map

Arc (FACT, AZI adjusted-price series): Five years ago TS traded at a ~$15.67 intraday low (2021-08-20). It rode the 2022 energy crisis to ~$30, round-tripped twice between ~$20 and ~$37 through 2023-2025, then more than doubled off the April 2025 tariff-crash low ($28.70 close, 2025-04-08) to a five-year closing high of $64.02 (intraday $64.60, 2026-06-03). The latest close is $57.96 (2026-08-04): −10.3% off the five-year closing high, 52-week intraday range $32.52-$64.60, +73.0% trailing one year, +98.8% trailing three years, +245% trailing five years. The price sits above the 50-day EMA ($57.41) and well above the 200-day EMA ($51.52).

#	Period	Approx. move	Price (~from → to)	Primary driver(s)	Fact / Interp
1	Dec 2021 → Jun 2022	+79%	$16.57 → $29.64	Russia’s invasion of Ukraine and the energy crisis; Brent spike; OCTG demand and pricing up (2022-03-07 was +9.6% in a day)	Move FACT; driver INTERP
2	Jun → Jul 2022	−34%	$29.64 → $19.65	Recession/rate-shock de-rating of energy cyclicals as oil pulled back from the June peak	Move FACT; driver INTERP
3	Sep 2022 → Feb 2023	+54%	$20.69 → $31.80	Record FY2022 results building (Q3’22 print, Nov 2022), OCTG pricing power, energy capex upcycle	Move FACT; driver INTERP
4	Feb → May 2023	−31%	$31.80 → $22.03	Oil price decline, falling US rig count, tubular inventory destocking into Q1’23 (2023-03-15 −8.0% day)	Move FACT; driver INTERP
5	May 2023 → Apr 2024	+65%	$22.03 → $36.26	Margin resilience through the downturn, capital returns (Q3’23 print 2023-11-01 → +8.7% next day), oil $75-90	Move FACT; driver INTERP
6	Apr → Aug 2024	−30%	$36.26 → $25.45	Q2’24 print (2024-07-31) with weak OCTG pricing/guide — −9.6% on 2024-08-01, the worst single day of the five-year window	Move FACT; driver INTERP
7	Aug 2024 → Mar 2025	+48%	$25.45 → $37.64	Post-US-election tariff/energy trade (+8.3% on 2024-11-06); Section 232 steel tariffs restored at 25% (Mar 2025) — TS is a large US domestic pipe producer (Bay City)	Move FACT; driver INTERP
8	Apr 2025 → Jun 2026	+123%	$28.70 → $64.02	Sharp V: “Liberation Day” crash (−8.5% Apr 3, −7.6% Apr 4) to $28.70, then a 14-month re-rate — Section 232 doubled to 50% (Jun 2025), the $1.2B buyback (announced 2025-05-27), a dividend raise, the 2026 Iran-war/Hormuz oil spike, and the Q4’25 beat (+7.9% on 2026-02-19)	Move FACT; drivers INTERP (buyback/dividend/print dates FACT)

Cycle narrative (INTERPRETATION unless noted). Events 1-4 are a classic oil-beta round trip: TS amplified the 2022 energy crisis in both directions, with single-day moves of ±8-10% around the March 2022 oil spike and the March 2023 risk-off. Events 5-6 show the mid-cycle fade: resilient earnings carried the stock to $36 before a weak Q2’24 print triggered the window’s worst day (FACT: −9.6% on 2024-08-01, the session after the 2024-07-31 release). Event 7 repriced TS as a tariff beneficiary — the +8.3% move on 2024-11-06 is FACT, the election-tariff link INTERPRETATION. Event 8 is the defining move of the window: the stock first crashed ~−24% in two weeks on the April 2025 tariff shock (FACT), then re-rated +123% over 14 months as the 50% Section 232 wall, the $1.2B buyback, and the 2026 oil supply shock compounded. Since the 2026-06-03 peak the stock pulled back −16% to $53.80 (2026-07-06) — the Q1’26 print was sold (−5.6% on 2026-05-07, FACT) and the oil leg cooled — before recovering to $57.96. Q2’26 results land 2026-08-06, the day after this report.

---

1. Executive Summary

Tenaris S.A. is the world’s largest producer of steel tubes for the energy industry — oil country tubular goods (OCTG), line pipe, and related services — a Luxembourg-domiciled foreign private issuer reporting under IFRS, controlled by the Techint Group (Rocca/Agostinelli families) with ~64-68% of the capital and votes. FY2025 numbers: revenue $11,981M, EBITDA $2,899M (24.2% margin), operating margin 19.1%, EPS $3.66 per ADS. The trailing twelve months through Q1-2026 run slightly better: revenue $12,159M, EBITDA ~$2.94B, EPS $3.80/ADS. The balance sheet is the strongest in the sector: $3.8B of net cash at Q1-26 plus $1.56B of associate stakes (Ternium, Usiminas), against gross debt of only ~$0.45B.

The analytical core of this memo is a three-way tension. First, the franchise is genuinely exceptional for its industry. Through the 2015-16 and 2020 troughs Tenaris held EBITDA margins of 12-18% and roughly breakeven ROIC while its closest pure peer, Vallourec, ran negative EBITDA for most of 2015-2020 and restructured twice. Tubes operating margins have held 18.6-19.4% for eight consecutive quarters versus 10-11% in 2018-19 — hard evidence of a structurally improved mix (Rig Direct service integration, premium connections, 90% US-self-supplied production). Second, the price already capitalizes that improvement — and then some. At $57.96 the market pays 15.2x trailing EPS, 8.7x trailing EV/EBITDA, and ~20x a $2.90 mid-cycle EPS estimate; the enterprise value underwrites ~$3.2B of EBITDA as permanent. The stock sits at the 95.6th percentile of its own price-to-book history, though that percentile is the cohort norm in mid-2026 (Nucor 96.8th, Steel Dynamics 99th, ArcelorMittal 97.8th) — a regime signal, not idiosyncratic exuberance. Third, the load-bearing assumption is fragile. An estimated $300-600M of EBITDA (2-4 margin points) is Section-232 tariff rent — a 50% policy wall that can be rolled back by signature, compressing EBITDA and the warranted multiple simultaneously. The tariff-reversal case alone implies $29-36/ADS.

Meanwhile the insider tape is quietly cautious: Techint sold 23.6M shares (its first sale in five years) between December 2025 and February 2026; the third buyback’s second tranche was terminated early in March 2026; and no fourth program has been announced as of this writing. Q2-2026 results arrive tomorrow, 2026-08-06, carrying the first full quarter of Hormuz-closure impact on Middle East shipments. Scenario values: bear $34-44, base $50-62, bull $70-84 per ADS — the current price sits inside the base case. The body of this report issues no recommendation and no price target; the Kimi’s Take block above is the sole opinion expressed.

2. Business Overview

What the company is. Tenaris is the largest of a three-to-four-player premium-seamless OCTG oligopoly (with Vallourec, Nippon Steel, and JFE), producing ~3.9 million tonnes of tubes per year — 3,135kt seamless and 782kt welded in FY2025 — against an estimated global OCTG consumption of roughly 15-18Mt/yr, implying a ~20-25% global volume share and a higher share in premium seamless (FACT for Tenaris volumes; the denominator is an ASSUMPTION — third-party TAM estimates diverge wildly, $16.8B to $40.4B, and are methodology-poor). Together, Tenaris, Vallourec, and Nippon control ~45% of the global OCTG market. Tubes are 95% of revenue ($11,400M of $11,981M in FY2025); the remaining 5% (“Others,” $581M) is sucker rods, coiled tubing, and energy/raw-material sales.

How it makes money. The business model has three layers. The commodity layer is API-grade pipe sold on price against Korean, Chinese, and regional mills — price-taking, no barriers. The premium layer is proprietary connections (the TenarisHydril family — Wedge, Blue, Dopeless) qualified over years with operators for deepwater, HPHT, shale laterals, and CO₂ injection; a connection failure in deepwater costs orders of magnitude more than the pipe, so operators do not re-qualify suppliers to save a few percent on tubulars. The service layer is Rig Direct: managing customer inventories, just-in-time mill-to-rig delivery, technical assistance, and digital supply-chain integration under long-term agreements with NOCs and IOCs — ADNOC (a $1.9B LTA awarded 2019 covering roughly half its OCTG needs), Saudi Aramco, QatarEnergy (North Field LTA awarded 2025), Ecopetrol (renewed February 2025 for two years), Petrobras, and the US shale E&Ps. No single customer exceeded 10% of sales in 2023, 2024, or 2025 (FACT, 20-F).

Geographic footprint and mix. The manufacturing system is a basin-by-basin network: Bay City, Texas (a $1.8B greenfield seamless mill completed 2017, at full capacity since 2022) plus the ex-IPSCO assets (Koppel, PA 430kt steel shop, Ambridge, Hickman) acquired from Russia’s TMK in January 2020; Siderca at Campana, Argentina (794kt seamless, with its own DRI plant and ~200MW of wind power now covering essentially all its electricity); Tamsa in Veracruz, Mexico (1,230kt seamless); Dalmine, Italy; Silcotub, Romania (complemented by the Artrom acquisition, May 2026); Saudi Steel Pipe; and threading/finishing in Canada, Brazil, Indonesia, and China. FY2025 Tubes regional mix: North America 49% ($5,552M, +2%), South America 18% ($2,104M, −8%), Asia-Pacific/Middle East/Africa 26% ($2,946M, −3%), Europe 7% ($799M, −30% as the Turkey offshore line-pipe program rolled off). In 2025 Tenaris supplied 90% of its US sales from US production at record output levels — the fact that makes the company a net beneficiary of the tariff wall rather than a victim.

Revenue character. Revenue is drilling-derived and cyclical, with no meaningful recurring component in the software sense — but the Rig Direct/NOC framework layer creates volume stickiness at cycle bottoms that the financial record corroborates (§4, §6). FY2025 revenue was −4% y/y and −19% below the FY2023 supercycle peak of $14,869M; FY2023 itself was inflated by record Argentine pipeline shipments. The company does not disclose premium-mix percentages or Rig Direct’s share of OCTG sales — a real disclosure gap that leaves the pricing-power question partially open.

Verdict: a simple-to-understand, heavily cyclical tubes business wrapped in a genuine service-and-qualification layer that demonstrably retains volume at cycle bottoms. The business model is as good as this industry permits; what it is not is a recurring-revenue or price-setting franchise. Disconfirming evidence weighed: US OCTG prices stayed flat for roughly three quarters after 50% tariffs (management’s own words: prices only “started to respond” in Q1-2026) — if the service layer conferred true pricing power, that lag would not exist.

3. Industry Dynamics

Structure. Global OCTG splits into two industries sharing a name. Premium seamless — the segment Tenaris occupies — is a qualification-gated oligopoly: the same three-to-four names for twenty-plus years, sustained 15-20%+ EBITDA margins at the leader, 40-50% price premiums over commodity grades (secondary-source figures, directionally consistent with Tenaris’s actual 24.2% FY2025 EBITDA margin and Vallourec’s $722/t Tubes EBITDA in Q2-26). Entry requires a $1.8B+ greenfield mill and five-plus-year qualification lags; nobody is financing new Western seamless capacity. Commodity API/welded is the opposite: fragmented, China-contestable (TPCO alone has ~4Mt of seamless capacity), no barriers. Greenwald’s barriers test passes cleanly for the first segment and fails for the second.

The supply side — the strongest part of the story. In Marathon capital-cycle terms, the Western OCTG industry has shrunk into this upcycle. Vallourec’s “New Vallourec” plan closed German tube operations and cut rolling capacity to ~1.98Mt (Europe down to 50kt); U.S. Steel closed Lorain seamless and Lone Star welded; Nippon closed one of three seamless mills (2022); TMK exited the US by selling IPSCO to Tenaris (2020); TPCO’s Corpus Christi greenfield never completed steelmaking. The leaders are in harvest mode: Tenaris Q1-26 capex of $114M runs below depreciation; Vallourec runs 60%+ cash conversion and ~€650M of 2026 shareholder returns. No IPO wave, no greenfield announcements. The canonical Marathon risk — high returns attracting new capacity — is currently blocked by qualification lags and trade walls. This is a genuine and important differentiation from flat steel, where ~9-12Mt of new US sheet capacity lands 2026-29 into flat demand (the late-cycle overbuild warning visible across the US flat-steel complex does not transfer to OCTG).

Demand — early-to-mid upcycle ex-Middle East, war-disrupted. As of late July 2026: US rig count 587-588, up ~45-48 y/y (oil ~450, gas ~127, with Haynesville +35% y/y on the LNG pull); international rigs 1,073 (+27 m/m); US OCTG prices inflected up — North America FOB +$220/t to $2,274/t in April 2026 — and distributor inventories sit below the five-year average (Vallourec, Q2-26). Global upstream capex is in its second consecutive down year (~−2-3%, with Baker Hughes guiding modestly below that on Middle East cuts), and US shale is rolling over — but the bull leg is a deferred 2027-28 international/offshore long-cycle: a >$100B FID pipeline, ~296 subsea trees forecast for 2026 and ~1,350 over 2026-30, Brazil/Guyana/Argentina supplying roughly half of 2026 global supply growth. The demand mix — gas drilling and offshore rather than short-cycle oil shale — favors seamless and premium connections, i.e., favors Tenaris’s product line.

The war overlay. Since late February 2026 the US–Israel/Iran war has closed or severely restricted the Strait of Hormuz (~20% of global oil/LNG transit). Brent spiked to ~$120 in late April, fell to ~$84-87 on the June ceasefire MOU, and the ceasefire partially collapsed again in July (tanker strikes; “managed reopening” corridors — the July re-closure reports are only weakly sourced and remain UNVERIFIED). The effect on the industry is asymmetric: oil prices and rest-of-world drilling up; Middle East OCTG logistics down; freight and insurance costs up. Vallourec’s Q2-26 showed the signature: tube volumes −17% y/y on Hormuz delivery delays, but EBITDA per tonne +31% to $722. Tenaris guided Q2-26 sales down on trapped Middle East shipments, with H2-26 recovery explicitly contingent on the strait reopening. The volume is deferred, not cancelled — Middle East NOCs’ first post-war drilling priority is restoring production capacity — but the timing assumption is load-bearing for H2-26 guidance.

The trade regime — the crux. Section 232 steel tariffs were reimposed at 25% on 2025-03-12 with all prior country exemptions terminated, doubled to 50% on 2025-06-04, and extended to the full customs value of derivative products in April 2026. US finished-steel import share fell from ~22% to ~15%; total steel imports are −30% YTD-2026. Stacked on top: long-standing OCTG AD/CVD orders; a February 2026 final affirmative circumvention ruling on Chinese seamless OCTG completed in Thailand; new April 2026 AD/CVD petitions against OCTG from Austria, Taiwan, and the UAE (alleged margins 42.9-93.6%, initiated 2026-04-23); and Canada’s own OCTG5 investigation plus CITT duties that hit Tenaris’s Canadian supply model in April 2026. For Tenaris this is net-positive with a catch: the 50% wall chokes the import competition that caps US OCTG prices, and Tenaris’s US melt-and-manufacture content monetizes the protected umbrella tariff-free — while its residual imports from Argentina, Mexico, and Italy pay the tariff (a gross cost management put at ~$140-150M/quarter at peak, declining on Koppel/US ramp; Q1-26 disclosed “lower tariff costs” offsetting maintenance shutdowns). The 2018-19 precedent showed NA margins expanding under tariffs. But this is policy, not structure — the same verdict prior analyses of the steel sector reached on the regime: real, material, and entirely political, i.e., reversible.

Verdict: structurally good industry in the segment Tenaris actually occupies; the overall industry label is cyclical-but-improving. Premium seamless OCTG exhibits real barriers, stable shares, a consolidated and disciplined supply side, and a demand mix shifting toward its most premium products. The two genuine structural debits: the US pricing umbrella is a reversible policy artifact, and demand is hostage to the oil macro and, acutely in 2026, to a strait. Disconfirming evidence for the “good industry” call: commodity welded remains a no-barrier China-contestable tail that caps how good the aggregate industry can ever be, and the 20-F itself concedes structural overcapacity globally (“substantial investments, especially in China… without a corresponding increase in demand”).

4. Competitive Position

The verdict up front: a real but narrow competitive advantage — at the strong end of “narrow.” The genuine moat components, in Greenwald’s taxonomy, are demand-side customer captivity (premium-connection qualification cycles plus Rig Direct service integration) and local economies of scale combined with captivity in protected basins (the US, Argentina, Mexico). There is no global supply-side/cost moat: commodity seamless pipe is globally contestable, and the 20-F says so itself. The financial signature confirms a narrow moat rather than a franchise — Tenaris stays profitable at cycle bottoms where peers bleed, but its twelve-year average ROIC of ~8-9% sits well below Greenwald’s 15-25% franchise threshold. A moat that only shows at the bottom is still a moat — but it is a defensive one.

Component 1 — TenarisHydril premium connections: real, but shared. The mechanism is search cost plus switching cost, not patents. Operators qualify a connection family over years of testing (API RP 5C5 CAL-IV and the like) and field history; the product has been iterated against the actual demand drivers (Wedge Series 400 for longer shale laterals, ultra-high-strength grades for 20K deepwater, Dopeless for offshore, CO₂-injection-qualified connections for CCS). But Vallourec’s VAM is a co-equal franchise (“the most widely used connections,” by Vallourec’s own account), and NSC/JFE are internationally recognized at the high-alloy end. This is an oligopoly advantage shared by three-to-four players — it supports segment-level margins, not Tenaris-specific pricing power. The metric that would deteriorate without it — premium mix and the premium-vs-commodity spread — is not disclosed, which keeps the pricing-power question partially open (OPEN QUESTION).

Component 2 — Rig Direct: captivity that buys share retention, demonstrably not pricing power. The switching friction is real: an E&P leaving Rig Direct must re-hire inventory management, put pipe working capital back on its own balance sheet, and re-qualify a supplier’s technical service. The observable payoff is volume stickiness through downturns — FY2025 North American sales held up in a falling rig count, which management attributes to the Rig Direct model, and the share record supports the claim. The counter-evidence is decisive on pricing: the company’s own risk factor concedes it “may fail to create sufficient differentiation in Rig Direct services to offset the added costs,” and US OCTG prices sat flat for ~3 quarters after 50% tariffs before only “starting to respond” in Q1-2026. If Rig Direct conferred pricing power, the price response would not have lagged a 50% tariff by three quarters.

Component 3 — local scale inside protected basins. Greenwald’s “think local” applies precisely. Tenaris’s scale advantage exists basin by basin: the only fully integrated domestic seamless OCTG producer at scale in the US (Bay City + Koppel + ex-IPSCO), dominant local position in Argentina (Vaca Muerta), strong local position in Mexico. Globally, seamless capacity is in structural overcapacity, so global scale confers nothing. The localization evidence cuts both ways: in Saudi Arabia, state-backed JESCO and AMTJ “have taken a leading share of the pipes supplied to Saudi Aramco” (20-F) — proof that local-content policy can evict even the global leader from NOC commodity volumes, and the template risk for every NOC market. Tenaris’s pre-positioned Saudi JV (an award-winning local manufacturer) and its UAE industrial complex are the mitigation.

The moat-at-the-bottom test — the strongest single piece of evidence. At the 2015-16 and 2020 troughs, Tenaris held EBITDA margins of 12-18% and near-breakeven ROIC; Vallourec ran negative EBITDA for most of 2015-2020 (−12.0%, −19.4%, −9.4%, −3.8% in 2015-18) and required two restructurings (Apollo control, then ArcelorMittal taking 28.4% in 2024). In the 2022-25 recovery, Vallourec’s ROIC converged toward Tenaris’s (11-18% vs 10-22%). Superior economics at the bottom, convergence at the top: commodity pricing dominates when demand is strong; the balance sheet, mix, and share retention dominate when it is weak. The exit/entry asymmetry corroborates: a decade of competitor exit and restructuring at the premium/international end (Vallourec twice, Lorain, NSC mill closures, TMK’s IPSCO sale), entry only at the commodity/localized end (Benteler, SeAH, JSW, JESCO/AMTJ). That is exactly the Greenwald signature of barriers where Tenaris plays and none where it doesn’t.

Pricing power — the weakest leg. EBITDA margin swung 12% (2020) → 32% (2023) → 24% (2025): earnings remain a function of the OCTG price cycle, not administered pricing. Any claim of consolidated “pricing power” is not supported by the tariff non-pass-through evidence. Tenaris is a price-taker with a better mix and stickier share.

The policy-rent caveat. A material slice of current margin is Section-232 and AD-order policy rent — a tariff umbrella, not a moat, that would deteriorate with trade policy rather than with competitive failure. Marathon’s read of the configuration — barriers holding prices while localized capacity is still being added (Saudi, US welded) — is the one that historically precedes disappointment when policy shifts. Tenaris is the best-positioned player to survive that resolution, which is a relative statement, not an absolute one.

Verdict: durable narrow advantage — defensive, not a compounder’s moat. It is worth paying a premium for relative to commodity steel; it does not justify capitalizing cyclically elevated margins. The disconfirming evidence (tariff-lagged pricing, shared premium technology, sub-franchise ROIC, Saudi localization losses) is not noise — it defines the boundaries of the moat precisely.

5. Growth History and Forward Opportunities

History. Tenaris’s growth has been stepwise and cycle-driven, not secular: revenue went from $6,521M (2021) to a supercycle peak of $14,869M (2023) and back to $11,981M (2025); tube volumes 2,803kt (2021) → 4,142kt (2023) → 3,917kt (2025). The long-run picture is a company that buys or builds capacity at troughs and harvests it in upcycles: the 1990s LatAm consolidation (Tamsa, Siat, Dalmine, Confab, Silcotub, NKKTubes) built the network from the Siderca base; Maverick (2006) and Hydril (2007) bought the US and premium connections at the top; Bay City (completed 2017) and IPSCO (2020, from a distressed seller) built the integrated US system; Mattr coating, Republic Tube, Beaver Falls scrap, and Artrom bolted on capabilities in 2023-26. Organic growth vectors are real but modest: sucker rods (AlphaRod; a $70M organic Conroe mill, 3.1M units/yr across five countries), line pipe for gas/LNG infrastructure (Saudi large-diameter expansion completed 2025; Qatar North Field), and fracking/coiled-tubing services in Argentina ($121M of revenue in 2025, largely to Techint-sibling Tecpetrol).

Forward opportunities — four legs, all adjacency-extensions of the same captivity. (1) The 2027-28 offshore/international long-cycle: a >$100B FID pipeline (per the author’s prior analysis of SLB, 2026-06-11), with named backlog already flowing — Petrobras pre-salt (a three-year conductor/surface-casing award, October 2025; Búzios FPSO sequence), ExxonMobil Guyana (Hammerhead, Longtail), Shell Sparta 20K, TotalEnergies GranMorgu (Suriname base opened on schedule June 2026), TPAO Sakarya phase 3. Rocca’s call: deepwater investment of “~$120 billion in ’28… almost 3x some of the low-end years” — management framing, treat as hypothesis, though the independent FID data points the same direction. (2) Gas drilling: Haynesville rigs +35% y/y, EIA forecasting record US gas production 2026-27, LNG exports +13.5 Bcf/d 2025-2030 — gas wells are seamless- and premium-connection-intensive. (3) Vaca Muerta: ~900kb/d in 2026, 79% of the Argentine rig fleet, breakevens $32-49/bbl, RIGI-anchored capex (Tecpetrol’s Los Toldos is a $6.4B approved project); a multi-year structural growth market for Siderca, insulated by local content and logistics. (4) Post-Hormuz Middle East restoration plus energy-transition tubulars (CCS CO₂-injection connections — Saudi CCS pipeline deliveries started September 2025 — hydrogen storage/transport, geothermal), which extend the same premium-seamless assets into demand pools that offset long-run oil-decline risk.

Verdict: low-quantity, decent-quality growth. None of these vectors changes the OCTG-cycle dependence; all of them are high-probability because they run through the same qualification channel and the same customers. The honest framing: this is a company whose “growth” is surviving downturns intact and buying competitors at the bottom — the five-year +245% total return came from re-rating and capital returns, not from unit growth (FY25 volumes are below FY23). Disconfirming note: Saudi Aramco destocking cut APMEA revenue in 2025 and localization (JESCO/AMTJ) took the leading Aramco commodity share — growth in NOC markets is not Tenaris’s to assume.

6. Financial Quality

The five-year P&L (FACT, filing-reconciled; per-ADS basis, 1 ADS = 2 shares).

FY	Revenue $M	Op income $M	Op mgn	EBITDA $M	EBITDA mgn	EPS/ADS
2021	6,521	759	11.6%	1,354	20.8%	1.86
2022	11,763	3,042	25.9%	3,649	31.0%	4.33
2023	14,869	4,274	28.7%	4,823	32.4%	6.65 (~6.0 norm.)
2024	12,524	2,519	20.1%	3,152	25.2%	3.61
2025	11,981	2,293	19.1%	2,899	24.2%	3.66
TTM Q1-26	12,159	~2,323	~19.1%	~2,945	~24.2%	~3.80

The 2022-23 supercycle (28.7% operating margin, 32.4% EBITDA margin at peak) has normalized to ~19%/24% — but the normalization stopped well above the 2016-2021 mid-cycle band (operating margins −1.5% to +11.6%; 2018-19 ~11.3%). The tell on structural improvement: Tubes operating margin has held 18.6-19.4% for eight consecutive quarters versus 10-11% in 2018-19. That is hard evidence, not hope — the question for valuation is how much of the ~8-point step-up is mix (Rig Direct ~50% of NA sales historically, premium connections, Bay City at full utilization) and how much is tariff rent (§10). Note the P&L items that are not improving: revenue −19% from the 2023 peak, SG&A ratio up from 12.9% to 15.3% of sales (SG&A is sticky at ~$1.8-1.9B as revenue normalizes), gross margin down from 41.7% to 34.4%. EPS has been held roughly flat ($3.61 → $3.66) through the normalization largely by the −14.5% share count — per-share resilience is partially manufactured, and the chairman’s letter says so.

Q1-2026 (FACT, 6-K 2026-05-07): sales $3,100M (+4% q/q, +6% y/y), EBITDA $735M (23.7% — the fifth straight ~24% quarter), EPS $1.07/ADS, FCF $503M, net cash $3.8B. North America tubes +19% y/y; APMEA −6% on Hormuz-delayed shipments. Guidance: Q2-26 sales down, margins hit by war logistics costs and fixed-cost de-absorption; H2-26 recovery assumes the strait reopens “in the short term.”

Balance sheet. Net cash $3.3B at YE2025 → $3.8B at Q1-26 (company APM: cash + investments − borrowings, verified to the statement of financial position: 572.6 + 2,306.8 + 758.1 − 305.7 ≈ $3.33B at YE25). Gross debt is trivial: $306M borrowings + $143M leases against $16.8B of equity; liabilities/assets 0.16. On top sit $1,561M of equity-method associates (Ternium 11.46% + the Usiminas control-group participation) — with the flag that the Ternium stake is carried at $1,375M against a $877M market value at YE2025 (no impairment taken; watch item). Working capital is structurally heavy: inventories $3,602M (still ~$1B above the pre-cycle level), a ~187-day cash conversion cycle — the mill-plus-Rig-Direct inventory model. Net PP&E $6,205M against $16.7B gross — an old, 62%-depreciated asset base; D&A $616M ≈ capex $617M in FY25, i.e., steady-state, with no under-depreciation flattery evident.

Free cash flow (FACT, company definition OCF − capex). FY22 $789M (the working-capital build year) → FY23 $3,776M → FY24 $2,172M → FY25 $1,983M; TTM ~$2.07B. Conversion runs 68-78% of EBITDA post-2022 versus 22% in the build year. Cumulative 2023-25 FCF of $7.9B ≈ 96% of net income over the period — high-quality cash generation. At the current ~$2.0B run-rate, FCF covers the ~$900M dividend ~2.2x; the 2025 total return of $2.26B (dividends $900M + buybacks $1,362M) exceeded FCF and was funded from the cash pile.

Quality of earnings — clean. No IAS 29 hyperinflation distortion (Argentine subsidiaries are USD-functional; “hyperinflation” appears zero times in the FY25 20-F; residual exposure is an $8.8M net short ARS position plus $204M of USD-denominated Argentine bonds). One-offs are small, footnoted, and two-sided: FY24 −$107M Usiminas litigation provision (plus −$43M via the Ternium equity line), FY25 +$34M antidumping-deposit return, Q4-23 +$360M deferred-tax gain (normalize FY23 EPS for this), last big impairments $622M in 2020. SBC is negligible ($53M of cash-based LTI, ~0.4% of sales; no equity comp for anyone). The SEC sweep found ex-items underlying EBITDA margin strikingly stable at ~24-25% from Q3’24 through Q1’26 — the 31-36% margins of 2022-H1’23 were the cycle peak, not the run-rate.

Returns. ROIC (provider series): 2019 5.0%, 2020 negative, 2021 5.1%, 2022 17.6%, 2023 21.9%, 2024 11.4%, 2025 10.4% (a hand calculation excluding associates from the denominator gives ~13.6% for FY25 — the definitional gap is unresolved; range 10-14%). ROE 11.6% (2025). This is a cyclical that earns well above its cost of capital at mid-cycle and roughly at it through full cycles — not a compounder’s profile.

Verdict: economics improve with scale only up to the cycle’s ceiling; the statements themselves are institutional-grade reliable. Cash generation is genuinely high-quality, the balance sheet is a fortress, and the accounting is conservative. The risk is the cycle, not the numbers. Disconfirming evidence weighed: SG&A creep, gross-margin erosion from the peak, inventory still ~$1B above pre-cycle, and the fact that flat EPS was bought with buybacks — all consistent with a normalized, not a structurally re-rated, earnings stream.

7. Capital Allocation

Control and governance. Tenaris is controlled by San Faustin S.A. through Techint Holdings S.à r.l., with the RP STAK stichting at the apex (“no person or group of persons controls RP STAK” — Rocca/Agostinelli family interests). The stake sat at 60.45% (713.6M shares) for years; buyback cancellations passively lifted it to 66.13% of issued capital / 70.07% of votes at YE2025; after selling 23.6M shares (December 2025 – February 2026) it stands at 64.37% / 68.34% (February 2026), with a stated floor of 67% of outstanding shares. The board is 11 directors, only 5 independent; the chairman holds a casting vote; FPI/controlled-company exemptions are actively used (no executive sessions, no nominating or compensation committee; compensation policy subject to a non-binding vote every four years). The audit committee (3/3 independent) holds non-delegable approval over material related-party transactions — which matters, because gross related-party flows run ~$0.6-0.7B/yr in each direction: flat steel from Ternium ($183M in FY25), power from Techgen ($67M, plus $69M of subordinated loans), gas from Tecpetrol ($29M), fracking services to Tecpetrol ($121M), pipe/rod sales to the group ($120M), engineering services ($43M). No evidence of value leakage in the disclosed terms, and dividends are pro-rata clean (Techint received $607M of the ~$900M paid in 2025 ≈ its economic stake) — but minorities are structurally passengers, and the FPI regime means no Form 3/4/5 insider tape at all.

Dividends. FY2021 $0.82/ADS → FY2025 $1.78/ADS (+7% y/y), more than doubled in four years; a November-interim/May-final pattern; payout ~45-49% of earnings; no formal payout policy. The dividend was defended through 2015-16 (paid above 100% of earnings) and cut only once (the FY2019 final, cancelled for COVID liquidity). Because the family is the largest recipient, distribution discipline aligns with minorities.

Buybacks — the best evidence on the tape. Three programs since November 2023: $1.2B (Nov-23→Aug-24, 71.7M shares at ~$16.74/share), $700M (Nov-24→Mar-25, 36.9M at ~$18.99), $1.2B (May-27-25 → terminated early 2026-03-03 with ~$1.17B executed, 62.4M shares). Average cost ≈ $36/ADS versus $57.96 today — roughly 1.1-1.3x book. Every repurchased share has been cancelled (EGMs April 2024, May 2025, May 2026): issued shares 1,180.5M → 1,009.6M, −14.5% in ~2.5 years. Two flags: (i) the program-3 contracts embedded derivative mechanics that would have transferred a “significant incremental pay-out” to the bank counterparty in a volatility spike — the company terminated tranche 2 early to avoid it, and shareholders bore that structuring opacity until termination disclosed it; (ii) while the company spent ~$1.36B buying stock in H2-2025, the controller sold 23.6M shares into the same market — disclosed as stake management under a 67% floor, not an exit, but the buyback effectively provided controller liquidity near the highs. And the program is now stopped: Q1-26 buybacks fell to $90M (from $537M in Q4-25), and no fourth program has been announced as of 2026-08-05 — against Rocca’s February framing that the factors behind the program “didn’t change so much.” That is the cleanest words-vs-numbers divergence in the record.

M&A scorecard. The two big top-of-cycle deals were value-destructive at purchase price: Maverick (2006, $3,185M including debt) was impaired in 2008 ($503M) and 2015 ($400M); Hydril (2007, ~$2.1B) was expensive but strategically durable — $920M of goodwill never impaired, and TenarisHydril is the core premium franchise. Everything since 2019 has been counter-cyclical and accretive: IPSCO from distressed TMK (announced $1.2B, closed January 2020 at $1.07B — followed by a $622M COVID impairment three months later, now the core of the US system supplying 90% of US sales); SSPC 47.79% for $141M (2019); Mattr coating $166M (2023); Beaver Falls scrap yard ~$13-18M (November 2025); Artrom seamless, Romania, €86M (May 2026); Sault Ste. Marie CAD$306M investment with government backing (May 2026). The Benteler Shreveport deal (July 2022) was sensibly allowed to die (terminated February 2023).

Reinvestment. Capex $378M (2022) → $619M (2023) → $694M (2024) → $617M (2025) ≈ 10-22% of EBITDA post-Bay City, versus ~65% at the 2015 trough build; through-cycle maintenance ~$350-400M. Bay City — the $1.8B greenfield that took six years to full utilization — looked like a poor financial return through 2020 and is now validated: with Section 232 extended to steel bars at 50%, the Bay City + Koppel system made Tenaris the only fully integrated domestic seamless producer at scale in the US, running record 2025 output. The validation came partly via tariff protection rather than pure market economics — worth remembering.

Incentives. No equity compensation for anyone (zero SBC dilution); directors a flat $115k with no variable pay; CEO $10M cash ($3M fixed/$7M variable on board-set, FPI-level opaque metrics); directors and management own just 0.08%. Alignment runs through the family’s 64-68% stake, not the pay plan — the CEO’s $10M is immaterial next to $607M of dividends to Techint. A clawback policy exists.

Verdict: intelligent, cycle-aware, increasingly shareholder-friendly capital allocation — with structural governance discounts. The buyback record (14.5% of the company retired at ~$36 average, cancelled not warehoused) is among the best in the sector; the post-2019 M&A discipline is real; the balance sheet is kept permanently net-cash for trough opportunities. The debits: ~$0.6-0.7B/yr of embedded Techint-group related-party flows (mitigated by audit-committee approval but permanent), a Ternium stake carried ~$500M above market, derivative-structured buyback contracts, no insider-transaction tape, and a controller whose first sale in five years coincided with the company buying at the highs. None of it suggests leakage; all of it belongs in the multiple.

8. Changes and Headwinds — Last Two Years

CEO succession (May 2026). On 2026-05-06 the board appointed Gabriel Podskubka — COO since April 2023, the executive who ran operations and Rig Direct globally — as CEO; Paolo Rocca remains Chairman and was re-elected at the 2026-05-12 AGM. Verified in the 6-K filed 2026-05-07 and confirmed at the AGM. First non-Rocca CEO. Read: a continuity succession, not a strategic break — but it lands in the same quarter as the controller’s sale and the buyback’s termination, so the stewardship signal deserves watching under the new CEO.

The Iran war and Hormuz (February 2026 → present). The war began 2026-02-28 — nine days after the Q4-25 call on which management guided Middle East revenues “pretty much in line” with H2-25. The strait closure since March trapped Middle East shipments; Q2-26 is guided down on sales and margins (logistics costs, fixed-cost de-absorption); the H2 recovery is explicitly contingent on reopening. The June 15-19 MOU (“Islamabad Memorandum”) produced a ceasefire and an oil-price fall of ~20% from the peak; July re-escalation and re-closure reports remain UNVERIFIED (weak secondary sourcing only). This is the live P&L swing factor for H2-26 and the subject of tomorrow’s Q2 print.

The tariff arc (2025-2026). Section 232: reimposed 25% (2025-03-12), doubled to 50% (2025-06-04), derivative loophole closed (April 2026). Gross cost to Tenaris peaked at ~$150M/quarter (management), declining in Q1-26 on the Koppel/US ramp; US OCTG prices finally “started to respond” in Q1-26 — three quarters after the doubling. New OCTG AD/CVD petitions (Austria/Taiwan/UAE, April 2026) would further wall the US premium segment. Against that: Canada’s CITT imposed AD duties on Tenaris OCTG (April 2026), cutting against the Canada supply model — the Sault Ste. Marie CAD$306M investment (May 2026, government-backed) is partly the answer.

The controller’s sale and the buyback termination. Techint sold 23.6M shares (~2.2% of capital) between 2025-12-09 and 2026-02-28 — the first controller sale in five years, disclosed only via 13D amendments and a 20-F footnote, framed as stake management against a 67% floor. The $1.2B program-3 second tranche was terminated effective 2026-03-03 to avoid a derivative make-whole payment; Q1-26 buybacks were $90M; no fourth program post-AGM. Separately, COO-then Podskubka sold 1,973 ADS (trivial, ~$90K).

M&A and investment. Artrom (Romanian seamless, €86M, May 2026) adds European capacity ahead of CBAM/safeguard tightening that Rocca flagged as favorable; Sault Ste. Marie (CAD$306M, May 2026) answers the Canadian duty exposure; Beaver Falls scrap (November 2025) vertically integrates Koppel’s scrap supply inside the tariff wall. Venezuela restarted serving Chevron (~$50M revenue expected 2026).

Operational/miscellaneous. Q4-25 was hit by a Koppel transformer outage (restarted by February 2026). The Usiminas/CSN litigation (2024 SCJ reversal, −$171M Q2-24, +$67M Q4-24 fee-cap reversal) still carries a $114.9M provision at YE25 with appeals pending. Argentina macro improved dramatically (country risk 1,456bp Sep-25 → ~425bp Jul-26; cepo lifted April 2025; Milei’s midterm win October 2025) — a real tailwind for Siderca’s home market.

Verdict: the two-year changes net to neutral-to-modestly-strengthening for the franchise, but the behavioral cluster (controller sale + buyback stop + succession) leans cautious at the current price. Artrom/Sault Ste. Marie/Beaver Falls are cheap, strategic, and on-brand; the war is exogenous and deferring rather than destroying Middle East demand; the tariff regime is a tailwind with a political fuse. What has changed for the worse is not the business — it is the insider appetite for the stock at $58 versus at $36.

9. Risk Analysis

Structured matrix: likelihood and impact are judgment (INTERPRETATION) on the evidence basis cited. Ordered roughly by materiality to the equity story.

#	Risk	Likelihood	Impact	Evidence basis
1	Section 232 rollback / trade-policy reversal. The US OCTG price umbrella is a reversible policy artifact; an estimated $300-600M of EBITDA (2-4 margin points) is tariff rent; a rollback compresses EBITDA and the warranted multiple simultaneously (double jeopardy), implying $29-36/ADS on its own	Medium	High	Tariff history (exemptions terminated Mar-25, doubled Jun-25); management’s own $140-150M/qtr cost disclosure; prior steel-sector analyses unanimous on “policy-manufactured, policy-reversible”; rent-sensitivity estimate (ASSUMPTION with wide error bars)
2	OCTG price/margin normalization to mid-cycle. 24% EBITDA margins have never been sustained through a downturn; the 2016-2021 mid-cycle band was 12-21%; the FY23 peak (32%) was a supercycle	Medium-High (over a full cycle)	High	Twelve-year margin record; EBITDA margin swung 12%→32%→24% across 2020-2025; Q2’24’s 19.6% quarter shows the speed of reversion
3	Hormuz / Iran-war duration. Q2-26 guided down; H2-26 recovery explicitly contingent on reopening; July re-closure reports unverified	Medium	Medium (deferral, not destruction, of ME volume)	Q1-26 6-K guidance language; Vallourec Q2-26 (−17% tubes volume); war timeline per news sweep
4	Oil-price normalization post-war. TS’s dominant factor loading is oil (+0.94); the IEA base case is $75-80 with surplus re-emerging late 2026/2027 if Hormuz normalizes — the war premium unwinds into the multiple	Medium	Medium-High	FactorsToday loadings/regime data; IEA-cited base case; factor-regime read (oil leg stalled, 63d −2.8%)
5	Chinese overcapacity moving upmarket. TPCO alone has ~4Mt seamless capacity; Chinese producers “have developed and are selling more sophisticated products… more recently in the Middle East” (20-F); commodity price floor drops toward Chinese cash costs wherever walls fall	High (secular)	Medium (blunted by trade walls where they hold)	20-F Competition section; Feb-2026 Thailand circumvention ruling (evidence of active probing); OECD excess-capacity ~640Mt → ~721Mt by 2027
6	NOC localization. JESCO/AMTJ took the leading Aramco commodity share; iktva at 70% local content (75% by 2030); the template can replicate in other NOC markets	Medium-High	Medium	20-F Competition section; Aramco iktva disclosures; Tenaris’s mitigation (in-kingdom JV) is partial
7	Working-capital / inventory cycle. Inventories $3.6B, ~$1B above pre-cycle; a price roll would force inventory devaluation and CCC (187 days) unwinds cash	Medium	Medium	FY25 balance sheet; 2022’s −$2.1B WC swing shows the amplitude
8	Governance / controller actions. Controlled FPI; 5-of-11 independent board; casting vote; $0.6-0.7B/yr RPT flows; no Form-4 tape; controller sold into the buyback; Ternium stake carried ~$500M above market	Structural (certain as a condition; uncertain as an event)	Medium (multiple-level, not solvency)	20-F governance/compensation/notes; 13D/A trail; audit-committee RPT framework as mitigant
9	Mexico / Pemex. “Limited recovery” five quarters into the refinancing story; credit exposure “significantly reduced” end-2025 but still a named risk	Medium	Low-Medium	20-F risk factors; Q3/Q4-25 call commentary vs Q1-26 PR
10	Argentina reversal. Siderca is the low-cost export platform; FX controls/hyperinflation/export-tax history; improvement is real but hostage to political continuity into 2027	Medium	Low-Medium	Country risk 1,456bp→~425bp; cepo lifted Apr-25; USD-functional subsidiaries limit accounting damage; IAS 29 not applied
11	Key-person / succession. First non-Rocca CEO (May 2026) during a war and a policy-dependent upcycle	Low-Medium	Low-Medium	Verified 6-K succession; Podskubka’s continuity profile (COO since 2023)
12	Litigation tail. Usiminas/CSN provision $114.9M at YE25, appeals pending; Venezuela nationalization compensation unresolved	Medium	Low	20-F notes 6/24/27; SCJ-capped exposure ≈ BRL 632.5M
13	Energy transition (long-run). OCTG demand is drilling-derived; the 20-F ties overcapacity to “the prospect of limited demand growth in an energy transition”; decline rates (5.6%/yr oil) require continuous drilling to stand still — a 2030s story, not a 2020s one; CCUS/H₂/geothermal are partial offsets on the same assets	Low (near-term) / High (long-run)	High (terminal)	20-F; IEA requirement ~$540B/yr upstream to maintain output; Vallourec geothermal-market commentary
14	Buyback-contract structure. Derivative-embedded buyback agreements already triggered one early termination with a counterparty make-whole; disclosed only at termination	Low (unless program resumes)	Low	20-F program-3 language; Feb-2026 termination 6-K

Aggregate read (INTERPRETATION): the distribution is unusual for a cyclical — the balance-sheet risks that kill cyclicals (leverage, covenant, dilution-at-trough) are essentially absent, and the downside is concentrated in margin and multiple rather than solvency. The two risks that matter most (1 and 2) are the same risk twice: the market is capitalizing a margin level that depends partly on policy and has never survived a downturn. Catastrophic-loss risk is low (net cash, bottom-cycle profitability, diversified customers); permanent-impairment-of-capital risk at the current price is the tariff-rent scenario, worth ~−40-50% without any recession.

10. Valuation Discussion

No price target; no recommendation. This section reverse-engineers what the price underwrites and stress-tests it. Scaffolding: 504.8M ADS (1,009.6M ordinary shares post the May-12-2026 cancellation) × $57.96 = ~$29.3B market cap (hand-built — the ROIC feed’s market-cap field double-counts the ADS ratio); EV1 = $25.5B (net cash $3.8B at Q1-26); EV2 = ~$23.9B if the $1.56B of associates are also credited (with the caveat that the Ternium stake’s $1,375M book is a 57% premium to its $877M market value).

The cycle record is the starting point. Eleven-year (2015-25) average EBITDA margin: ~21.3%. Pre-supercycle mid-cycle (2017-21): ~18.3%. The 2018-19 “normal”: ~19.3%. Trough floor: 12-14%. Supercycle peak: 31-32%. Current: 24.2%. Every honest normalization exercise starts from the fact that today’s margin has only been exceeded in the two supercycle years and has never — not once — been sustained through a downturn.

Mid-cycle normalization (ASSUMPTION, central). Decompose the current 24.2% EBITDA margin: ~19% is the demonstrated pre-tariff mid-cycle (2018-19 actuals, on a less favorable footprint — pre-Bay-City-full-utilization, pre-Rig-Direct maturity); +2-3 points of structural improvement (INTERPRETATION — evidenced by eight straight quarters of 18.6-19.4% Tubes operating margins versus 10-11% in 2018-19); +2-4 points of Section-232 policy rent (ASSUMPTION — the price-umbrella gain net of the ~$140-150M/quarter gross tariff cost management disclosed). Central mid-cycle: ~20% EBITDA margin (range 18-22%) on ~$12.0B of normalized revenue (FY25/TTM volumes of ~3.9Mt at current price levels — the 2018-19 revenue base of $7.3-7.7B is stale because OCTG prices are structurally higher). That yields mid-cycle EBITDA ~$2.4B and EPS ~$2.90/ADS (range $2.50 at 18% to $3.30 at 22%; EBITDA grid $2.07B to $3.00B across the margin/revenue grid).

What $57.96 pays on each basis (FACT arithmetic): trailing TTM P/E 15.2x and EV/EBITDA 8.7x (EV2: 8.1x); on FY25, 15.8x and 8.8x; on normalized peak FY23 EPS (~$6.0), ~9.7x and 5.3x; on mid-cycle, ~20x P/E and ~10.6x EV/EBITDA. FCF yield: 7.1% trailing, ~5.5% mid-cycle. P/B 1.74-1.82x against through-cycle ROIC of ~10% and FY25 ROE of 11.6% — the market is capitalizing ~12% sustainable ROE, achievable only in the upper half of the cycle.

Own history says this is the rich end. TS has historically been priced at low-single-digit P/E at earnings peaks (5.5x at the February 2023 price peak of $36.67, on $6.65 EPS) and on asset support at troughs (~0.6x book at the $9.15 COVID low; ~2.7x trough P/S at the 2016 low of $19.29). The stock now sits +58% above its 2023 boom price-peak with TTM EPS 43% below the FY23 peak — a pure multiple re-rating. The P/B percentile (95.6th) and P/S percentile (80.3rd) are real but cohort-wide: NUE 96.8th, STLD 99th, MT 97.8th, GGB 95th, BKR 97.7th, FTI 98th — every tariff-protected steel name and every re-rated OFS name sits near record own-history valuation in mid-2026. The percentile is a regime signal (50% Section 232 plus an anticipated 2027-28 offshore recovery), not idiosyncratic exuberance. (The AZI P/E percentile of 69.5th is discarded — it rests on a stale $3.62 TTM EPS; the filing-basis TTM is $3.80.)

Embedded expectations (INTERPRETATION on the arithmetic). At a warranted through-cycle multiple of ~8x EV/EBITDA — between commodity steel at 5-6x and the OFS majors at 9.4-10.5x, which is where a best-in-class, net-cash, bottom-cycle-profitable cyclical belongs — the $25.5B EV capitalizes ~$3.2B of EBITDA, i.e., FY2024-level 25% margins treated as permanent. The market is pricing scenario (a): mid-cycle-to-current earnings sustained. It is not pricing (b) a supercycle repeat (at FY23’s $4.8B EBITDA the stock would be at 5.3x — nobody pays 5x for peak EBITDA unless they expect it to repeat), and it is explicitly not pricing © mean reversion (at 2018-19 economics the stock would be ~12x EV/EBITDA and ~23-25x P/E). What the market is underwriting correctly: the structural-mix improvement (eight quarters of evidence), the balance-sheet floor, the buyback-driven per-share compounding, and OCTG’s genuinely healthier supply side versus flat steel. What it may be underwriting incorrectly: tariff permanence (policy, not structure); a clean Hormuz normalization (July re-escalation unresolved); and the treatment of 2026 US OCTG price strength as cycle rather than policy (prices only “started to respond” to a 50% tariff three quarters late).

The tariff-rent fragility, quantified. If ~$300-600M of group EBITDA is Section-232 rent, a rollback takes mid-cycle EBITDA from ~$2.4B toward ~$1.9-2.1B and compresses the warranted multiple toward the commodity-steel cohort (5-6x) at the same time — the double jeopardy that prior steel-sector analyses flag. $1.9-2.1B × 5-6x + ~$5.4B of SOTP assets (net cash $3.8B + associates $1.56B book) ≈ $15-18B of equity ≈ $29-36/ADS. The tariff-reversal case alone, with no demand downturn, roughly halves the equity story from $57.96. This is the single most fragile load-bearing assumption in the price — and it is an ASSUMPTION with wide error bars, because the Bay City domestic-vs-import split (which would pin the rent precisely) is not disclosed.

Scenarios (per ADS; EV + net cash + associates):

• Bear $34-44 (midpoint ~$39, −33%): Hormuz aftermath plus rig downturn plus tariff reversal; revenue ~$10-11B; EBITDA $1.8-2.2B at 7-8x; associates haircut 50%. Reaching ~two-thirds of this downside requires only policy reversal, not a recession.
• Base $50-62 (midpoint ~$56 ≈ the current price): mid-cycle holds; Hormuz reopens durably; tariffs broadly intact; EBITDA $2.5-2.9B at 8-9x. The market price sits inside the base case — the market is already paying for it.
• Bull $70-84 (midpoint ~$77, +33%): the offshore/gas upcycle arrives on schedule plus a fourth buyback plus margins ≥24% sustained; revenue $13-14B; EBITDA $3.3-3.7B at 9-10x (re-rate toward the OFS complex). The bull case requires both volume recovery and margin persistence — margins ≥24% have never survived a full cycle.

The fan is roughly symmetric (±~33% to midpoints), but the asymmetry of requirements matters: the bear case needs one political signature; the bull case needs a demand cycle and an unprecedented margin hold.

Cross-checks. (i) SOTP-lite: net cash plus associates ≈ $5.4B ≈ $10.6/ADS ≈ 18% of the price is asset ballast (Ternium haircut to market: ~$9.5/ADS); the operating business is implicitly priced at ~$47/ADS ≈ 8-10x mid-cycle-to-trailing EBITDA — the entire valuation debate is the multiple on the operating business. (ii) Cohort placement: commodity steel GGB ~5.0x/TX ~6.3x/SID ~6.0x EV/EBITDA; US quality steel NUE ~8.5x/STLD ~15.6x; OFS majors HAL ~9.4x/SLB ~10.5x/BKR ~13.7x. The factor model says the market treats TS as an oil-services company (top factor-similar names: XES, OIH, PTEN, FTI, HAL — zero steel names); fundamentally it should trade between the cohorts — demand is OFS-derived, but cost structure, capital intensity, and policy dependence are steel. At ~10.6x mid-cycle EV/EBITDA the market is already paying the OFS-cohort multiple on earnings that embed policy rent. (iii) Carry: the dividend yields 3.1%; FY25 total returns were 7.7% of market cap, but the buyback is paused — forward cash yield is ~3.1% dividend-only unless a fourth program lands with tomorrow’s Q2 print.

Verdict: a fully-priced base case. Above-mid-cycle earnings capitalized at a mid-to-upper-band multiple, at the 95.6th own-history P/B percentile (cohort-wide), with ~18% of the price in cash and associate ballast. The market is not making the naive peak-capitalization error (15.2x trailing is not 5.5x-at-peak 2023 pricing) — it is making the subtler one: paying for permanence of a margin level that is part policy, part cycle, and part genuine mix, at a price that leaves nothing for the possibility that the first two parts fade. Disconfirming evidence for this verdict, weighed honestly: if the structural-mix thesis is worth more than +2-3 points (i.e., if 24% margins are the new floor, as the bulls argue from the eight-quarter record), then $57.96 is merely fair-to-cheap on a through-cycle view, and the bull case is the base case. The eight-quarter margin stability is the best evidence for that — and the Q2-26 print is its first real stress test.

11. Variant Perception

Consensus belief (reconstructed from the tape, the factor model, and cohort pricing — no sell-side survey is cited here): TS is a high-quality, net-cash OCTG leader whose earnings have structurally re-rated on mix (Rig Direct, premium, US-made) and whose capital returns (3.1% dividend + buybacks) support a full multiple; the tariff regime is treated as durable background; the 2027-28 offshore recovery is the forward leg. The price action — +123% in 14 months, 95.6th P/B percentile — says this view is not merely held but owned.

The strongest bull case. The eight-quarter run of 18.6-19.4% Tubes operating margins is not a cycle artifact — it is the mix thesis proven. The Western supply side has structurally shrunk (Vallourec cut to ~1.98Mt, Europe at 50kt; no greenfield; no IPOs), so the next upcycle meets the tightest premium-seamless capacity in two decades, with distributor inventories already below the five-year average and US OCTG pricing just inflected up (+$220/t April 2026). The deferred 2027-28 offshore/international FID wave (>$100B), US gas drilling (Haynesville +35%, LNG pull), post-Hormuz Middle East capacity-restoration drilling, and Vaca Muerta’s RIGI-anchored build all skew premium-seamless-intensive. Layer a fourth buyback on 504.8M ADS and 24-26% margins on $13-14B of revenue: EBITDA $3.3-3.7B at 9-10x = $70-84/ADS. The insider-caution counter-narrative is over-read: Techint’s sale was transparently disclosed stake management against a 67% floor after passive accretion, and the buyback termination was contract mechanics, not a view.

The strongest bear case. The market is capitalizing ~$3.2B of EBITDA as permanent when the through-cycle record says ~$2.4B is the honest mid-point and ~$2.0-2.2B is the demonstrated pre-tariff reality. Of the current margin, $300-600M is a political artifact that can be removed by signature — and when it is, the multiple compresses with the earnings, because the same signature de-rates the entire steel cohort (the unanimous verdict of prior analyses across the steel cohort: “policy-manufactured and therefore policy-reversible”). The tariff-reversal path alone is $29-36/ADS. The people with the best information are behaving accordingly: the controller sold for the first time in five years, the buyback was terminated early, and no fourth program exists. Meanwhile the stock’s dominant return driver — oil, loading +0.94 — has stalled (factor 63d −2.8%) with an IEA base case of $75-80 and surplus re-emerging; the oil-equipment industry factor is at z −1.6; and the ten-year/lifetime drawdown record (−75%/−83%) is what this stock does to holders who buy −10% off the high. The Q2-26 print tomorrow is a binary: guided down, with the H2 recovery resting on an unverified ceasefire.

The 3-5 assumptions that matter most. (1) Tariff durability — Section 232 at ~50% persists or is replaced by equivalent OCTG-specific walls (the $29-36 vs $50-62 swing). (2) The structural-mix step-up is real and durable — worth +2-3 points of margin through a downturn, not just through eight quarters of an upcycle. (3) Hormuz normalizes — H2-26 Middle East volume recovery happens on management’s schedule. (4) The 2027-28 offshore/gas upcycle arrives — FIDs convert to OCTG demand rather than slipping, as FTI’s 2025 inbound (−3.6%) warns they can. (5) Capital returns resume — a fourth buyback keeps the per-share compounding that has carried EPS.

Factor-positioning read (input, not a price call). TS trades as an oil-price proxy with a value/dividend-yield tilt: dominant loadings OilPrice +0.94, DividendYield +0.69, Energy +0.59, Oil Equipment +0.37; Momentum only +0.08; Value +0.06; Quality zeroed; R² 0.55. This is not a crowded momentum trade (the momentum loading is minor and the momentum factor is neutral) and not an abandoned value name either (Value z +1.95, DividendYield z +1.94 — its two dominant style tilts are the in-favor factors). Its factor-similar peers are entirely oil services (XES, PSCE, OIH, PTEN, FTI, HAL, SHEL, BKR) — the market prices TS in the OFS neighborhood, not the steel one, which corroborates the valuation finding that it already carries an OFS-cohort multiple. The tension: trailing one-year risk-adjusted numbers (Sharpe 2.54) are as good as this stock ever prints, while its #1 driver (oil) has gone flat and its industry factor is out of favor (126d z −1.59). Vallourec matched the three-year re-rate (+126% vs TS +99%) — this was a segment re-rating, not purely idiosyncratic alpha, which means it can de-rate as a segment too. Short interest was not available from the sources reviewed (OPEN).

Where consensus is most likely offsides. Not on the franchise (correctly appreciated), and not on the cycle direction (probably right for 2027-28), but on the permanence question: consensus prices a margin level that bundles cycle, policy, and mix into one number and capitalizes all of it. The falsification works both ways — which is exactly the What-Must-Be-True section below.

12. Fact vs. Interpretation

Claim used in this memo	Status	Basis
1 ADS = 2 ordinary shares; ~504.8M ADS outstanding post May-2026 cancellation	FACT	FY25 20-F cover/Item 10; EGM 6-K 2026-05-13
FY25 revenue $11,981M / EBITDA $2,899M (24.2%) / EPS $3.66/ADS; TTM EPS $3.80/ADS	FACT	FY25 20-F; Q1-26 6-K; quarterly EPS sum
Net cash $3.3B YE25 → $3.8B Q1-26; associates $1,561M book; Ternium book $1,375M vs market $877M	FACT	20-F SoFP + note 14; Q1-26 6-K
Tubes op margin 18.6-19.4% for 8 straight quarters vs 10-11% in 2018-19	FACT	Quarterly 6-K series, SEC sweep normalization
FCF $3.78B FY23 → $1.98B FY25; conversion 68-78% of EBITDA post-2022	FACT	Company-definition FCF from cash-flow statements (XBRL)
Share count −14.5% (1,180.5M → 1,009.6M); ~$3.1B buybacks at ~$36/ADS avg; all cancelled	FACT	20-F pp. 202-203; EGM 6-Ks; XBRL treasury purchases
Techint sold 23.6M shares Dec-25→Feb-26; first sale in 5 years; 67% floor	FACT	20-F Major Shareholders footnote; 13D/A via 6-Ks 2025-09-19/12-18
Podskubka CEO since 2026-05-06; Rocca Chairman	FACT	6-K 2026-05-07 (acc. …3151); AGM 6-K 2026-05-13
No 4th buyback announced as of 2026-08-05	FACT	EDGAR submissions + IR release list checked 2026-08-05
Section 232: 25% 2025-03-12 → 50% 2025-06-04 → derivative close Apr-2026; gross cost ~$140-150M/qtr peak	FACT	Section 232 proclamations (Federal Register); management call disclosure
Iran war from 2026-02-28; Hormuz closed since March; Q2-26 guided down; Brent ~$120 peak → ~$84-87	FACT (war/guidance) / FACT w. secondary sourcing (price path)	Q1-26 PR; industry/news sweeps
Mid-cycle EBITDA ~$2.4B / EPS ~$2.90/ADS (range $2.50-3.30)	ASSUMPTION (central)	Margin decomposition: 19% demonstrated + 2-3pts mix + 2-4pts rent, on ~$12B revenue
~$300-600M of EBITDA is Section-232 tariff rent	ASSUMPTION (wide error bars)	Rent = umbrella gain net of disclosed gross cost; Bay City import split undisclosed
Tariff-reversal standalone value $29-36/ADS	INTERPRETATION (scenario arithmetic on the ASSUMPTION above)	$1.9-2.1B EBITDA × 5-6x + $5.4B SOTP
Scenario values $34-44 / $50-62 / $70-84	INTERPRETATION	Explicit assumption sets per scenario (§10)
Market underwrites ~$3.2B EBITDA as permanent at $57.96	INTERPRETATION	$25.5B EV ÷ ~8x warranted through-cycle multiple
Rig Direct buys share retention, not pricing power	INTERPRETATION	Flat US OCTG prices for ~3 quarters post-50%-tariff; company risk-factor concession
TS moat is narrow/defensive, not a franchise	INTERPRETATION	12-yr avg ROIC ~8-9% vs 15-25% franchise band; trough-margin record vs Vallourec
Controller sale + buyback stop = insiders cautious at $58	INTERPRETATION	Stated purpose was stake management vs 67% floor; timing is the fact, the motive is the interpretation
July-2026 Hormuz re-closure	UNVERIFIED	Weak secondary sourcing only (blog, 2026-07-21)
AZI TTM EPS $3.62; P/E percentile 69.5th; ROIC market-cap field	REJECTED DATA (stale/broken)	Filing-basis TTM $3.80; ADS-ratio double-count; see §10

13. Open Questions

1. Q2-2026 results (2026-08-06 — tomorrow). The size of the Hormuz-quarter EBITDA hit, the credibility of the H2 recovery guide, and whether a fourth buyback program is announced. The single largest near-term repricing event.
2. Hormuz status as of this report. June MOU reopening vs July re-closure reports (unverified) — determines whether the base or bear revenue path applies to H2-26.
3. The precise NA tariff rent. The Bay City domestic-melt vs import split is undisclosed; the $300-600M EBITDA rent estimate has wide error bars and would benefit from any 20-F granularity.
4. Premium mix and premium/commodity price spread. Not disclosed; would settle the pricing-power question definitively. Rig Direct’s current % of OCTG sales likewise no longer disclosed (the “>60%” blog figure is unsourced and was not used).
5. Why Techint sold. Estate/RP-STAK restructuring vs diversification vs valuation judgment — the filings state stake management against a 67% floor but do not explain the choice of timing.
6. Why buyback tranche 2 was really terminated. The disclosed reason (derivative make-whole to the counterparty bank amid volatility) is FACT; whether war-driven caution or M&A dry powder (Artrom; Rocca: “we will be very active on this if we perceive that there is room”) also played a role is open.
7. FY2026 capex guidance. None found in the Q1-26 PR; run-rate ~$600M/yr; verify in the Q2 release.
8. Canada CITT duty scope on Tenaris-specific OCTG — quantifies the Canada headwind against the CAD$306M Sault Ste. Marie response.
9. Venezuela durability — does the ~$50M 2026 revenue guide (Chevron-served restart) survive the regional war environment?
10. Usiminas/CSN appeals outcome — $114.9M provision at YE25; and the Ternium book-vs-market gap ($1,375M vs $877M) if Ternium’s price stays weak.
11. Short interest / days-to-cover — not available from the sources reviewed; would sharpen the positioning read.
12. Vallourec clean EV/EBITDA — the single best comp multiple was not computable from the available data (ADR/Paris listing gaps).
13. Argentine export-duty regime on steel pipes — not re-verified for this report; relevant to Siderca’s export economics.

14. What Must Be True

For the bull case ($70-84/ADS):

• Tubes operating margins hold ≥19% and group EBITDA margins ≥24% through the Hormuz-disrupted 2026 — i.e., the eight-quarter margin record is structural, not cyclical. Falsification test: Q2-26 or Q3-26 group EBITDA margin prints below ~21% on normalized (post-reopening) volumes — that would mark 24% as a policy/cycle level, not a floor.
• Hormuz reopens durably and Middle East shipments recover in H2-26 on management’s schedule; the deferred 2027-28 offshore FID wave converts into OCTG orders (Búzios, GranMorgu, Sakarya-3, Hammerhead ship on time). Falsification: H2-26 APMEA revenue still down y/y with the strait open, or marquee FIDs slipping (the FTI inbound −3.6% pattern spreading).
• Section 232 at ~50% persists (or OCTG-specific AD/CVD walls replace it at equivalent protection — the Austria/Taiwan/UAE case delivering duties). Falsification: any negotiated rate reduction, quota deal, or exemption restoration.
• A fourth buyback program is announced and executed at scale (~$1B+), keeping the per-share compounding. Falsification: dividends-only capital return through the 2027 AGM.

For the bear case ($34-44/ADS, and the $29-36 tariff-reversal tail):

• Section 232 is rolled back or diluted (rate cut, quotas, exemptions), removing an estimated $300-600M of EBITDA rent and de-rating the steel cohort multiple toward 5-6x simultaneously. Falsification: 232 survives the current administration’s review cycle intact and the April-2026 OCTG AD/CVD petitions conclude with duties — the wall becomes layered, not single-point-of-failure.
• Oil normalizes toward the IEA $75-80 base case as Hormuz normalizes, removing the war premium from TS’s dominant factor; US rig counts roll with it. Falsification: Brent holds >$90 with Hormuz open (structural tightness rather than war premium) and international rig counts keep climbing.
• The mix step-up proves cyclical: margins revert toward the 18-20% mid-cycle band as the 2026 price strength fades. Falsification: margins hold ≥22% through a full US rig-count downturn.
• Insider caution proves predictive: no fourth buyback, further Techint sales toward the 67% floor. Falsification: a new $1B+ program announced with Q2-26 results and no further 13D sales.

The single most informative next datapoint: tomorrow’s Q2-26 print — EBITDA margin against the guided logistics/fixed-cost hit, the H2 Middle East volume language, and the buyback line. It tests bull assumptions 1 and 4 and bear assumption 4 simultaneously.

15. Source Appendix

Sourcing approach: every material claim in this report traces to the public primary sources enumerated below — SEC filings, company communications, commercial data feeds, and public industry and trade sources.

Representative primary sources (full enumeration in Appendix B):

• SEC filings (SEC EDGAR, CIK 0001190723): FY2025 Form 20-F (filed 2026-03-31) — selected financial data, competition/products sections, major-shareholders footnotes, notes 4/5/6/10/14/24/26/27/30/34/U; FY2021-FY2024 20-Fs; the complete 6-K corpus 2021-08 → 2026-08 (207 documents) — notably the quarterly earnings releases Q2’21 through Q1’26, the CEO-succession 6-K (2026-05-07, acc. 000117184326003151), the Artrom 6-K (2026-05-11, acc. …3221), the buyback-termination 6-K (2026-02, acc. …1031), the EGM cancellation 6-K (2026-05-13), and the 13D/A notification 6-Ks (2025-09-19, 2025-12-18); EDGAR companyfacts ifrs-full XBRL.
• Company communications: Q4/FY2025 results release and call (2026-02-18/19); Q1-2026 release and interim statements (2026-05-06/07); Q2/Q3-2025 releases and calls (2025-07-31, 2025-10-30/31); buyback program/tranche announcements (2023-11 through 2026-03); Beaver Falls, Petrobras award, Suriname base, Sault Ste. Marie, Ecopetrol renewal press releases; earnings-call transcripts via the ROIC.ai transcript feed.
• Market/factor data: AZI adjusted daily price series for TS, SLB, HAL, BKR, VLOWY, VK.PA, X (through 2026-08-04); AZI fundamentals snapshot (2026-08-04, used with the corrections documented in §10); FactorsToday loadings, leaderboard, factor returns, related-stocks, and idiosyncratic-vol endpoints (2026-08-04/05).
• Industry/trade: Baker Hughes rig counts (July 2026); GMK Center OCTG pricing (2026-05-13); Vallourec Q2-2026 release (2026-07-30); Recycling Today scrap/HRC coverage; trade.gov / federalregister.gov / usitc.gov trade-action records (Section 232 timeline, Thailand circumvention final 2026-02-27, Austria/Taiwan/UAE initiation 2026-04-23, Canada CITT/OCTG5); OECD/Worldsteel capacity and demand data.
• Peer-company public filings cross-read: Gerdau, ArcelorMittal, Cleveland-Cliffs, Nucor, and Steel Dynamics (steel-cohort 20-Fs/10-Ks and results releases); YPF and Petrobras (20-Fs); SLB, Halliburton, Baker Hughes, and TechnipFMC (10-Ks and results releases) — used for the Section-232 timeline, cohort multiples and percentiles, Argentina/Brazil context, and the OFS cycle read.

Known data caveats (documented, not hidden): the AZI TTM EPS ($3.62) and P/E percentile (69.5th) are stale and were discarded in favor of the filing-basis $3.80; the ROIC market-cap field double-counts the ADS ratio and was hand-rebuilt ($29.3B); ROIC capex fields are garbled for TS and XBRL figures were used instead; third-party OCTG TAM estimates diverge by >2x and were anchored on volumes instead; the July Hormuz re-closure is unverified; short interest was unavailable.

---

Independent equity research. The numbered sections above carry no recommendation and no price target; the only opinion expressed anywhere in this document is the labeled Kimi’s Take block at the top — the author’s own view, general information only, not investment advice.

APPENDIX A — Standard Diligence Questionnaire — Tenaris S.A. (NYSE: TS)

Research Appendix | Report date: 2026-08-05 | Diligence questionnaire, supplemental to the report above Basis: IFRS, USD reporting. Luxembourg foreign private issuer (20-F/6-K filer). 1 ADS = 2 ordinary shares (FY2025 20-F, cover). Price referenced: $57.96/ADS (2026-08-04 close). Share count: 1,009,639,756 ordinary shares issued (≈504.8M ADS) after the May 12, 2026 EGM cancellation. Sources: this appendix is grounded in the FY2021–FY2025 20-Fs, the complete 6-K corpus (207 filings, 2021–2026), Q1-2026 interim statements, earnings-call transcripts, and public industry data, as enumerated in Appendix B. Labels: [FACT] = from a filing or verified data; [INTERPRETATION] = analyst judgment on facts; [ASSUMPTION] = estimate with material error bars. Nothing herein is a recommendation; no price target is expressed.

---

1. General — What thoughtful questions have other investors asked about this company?

The questions that recur across the 2025–26 earnings calls, the filing record, and the tape — the ones a skeptical holder actually has to answer:

1. Is the ~24% EBITDA margin the new mid-cycle, or is part of it rented from Washington? EBITDA margin has held 23.7–25.3% for five straight quarters through Q1-2026 [FACT], versus 10–11% Tubes operating margins in 2018–19 and 31–36% at the 2022–23 peak [FACT]. Decomposing the uplift: roughly +2–3 points of demonstrably structural mix improvement (Rig Direct, premium connections, 90% US-production content) and an estimated +2–4 points of Section 232 policy rent [ASSUMPTION — the rent estimate of ~$300–600M EBITDA has wide error bars because the Bay City domestic-melt vs. import split is not disclosed]. Everything in the valuation debate reduces to this question.
2. Why did the controlling shareholder sell for the first time in five years — into the company’s own buyback? Techint Holdings sold 23.6M shares (~2.2% of capital) between 2025-12-09 and 2026-02-28 [FACT, 20-F footnote / 13D amendments], while the company spent ~$1.36B repurchasing stock in H2-2025 [FACT]. The stated purpose is stake management — buyback-driven passive accretion had lifted Techint to 70.07% of votes, above its self-declared 67%-of-outstanding ceiling [FACT]. The rationale is disclosed; whether minorities should be comfortable that the buyback provided the liquidity is a judgment [INTERPRETATION].
3. Why was buyback tranche 2 terminated early, and where is program #4? The second $600M tranche was terminated effective 2026-03-03 because continuation “would… have resulted in a significant incremental pay-out to its counterparty” under the buyback agreement’s derivative mechanics amid volatility [FACT, 20-F]. Rocca said on 2026-02-19 the factors behind the program “didn’t change so much”; four days later the tranche was cancelled, Q1-26 buybacks fell to $90M (from $537M in Q4-25), and no fourth program has been announced as of 2026-08-05 [FACT]. This is the cleanest words-vs-numbers divergence in the record.
4. Does the H2-2026 recovery guidance survive the actual status of the Strait of Hormuz? Management’s H2 rebound assumes the strait reopens “in the short term” [FACT, Q1-26 PR]. A June 2026 ceasefire MOU partially collapsed in July (tanker strikes, reported fourth closure — weakly sourced) [FACT/OPEN]. Q2-2026 results land 2026-08-06, the day after this report.
5. What are Rig Direct and premium connections actually worth? The company no longer discloses Rig Direct’s share of sales (historically ~50%+ of North America) or the premium-vs-commodity price spread [FACT — disclosure gap]. A “>60% of global volume” figure circulating in blogs is unsourced and unusable [FACT].
6. Is the Ternium stake worth book? Carried at $1,375M against a market value of $877M at YE2025 — a 57% premium of book over market, tested, no impairment [FACT, 20-F note 14].
7. What is the net cash for? $3.8B at Q1-26 against $0.45B gross debt [FACT]. Rocca says capital stays “available for any expansion or opportunity” and “we will be very active on [M&A]” — the pile is partly dry powder (Artrom, €86M, May 2026) [FACT quotes, treated as hypothesis].

2. Cyclicality & Earnings Nature

Are earnings at a cyclical high or low? Neither — they are normalized but above mid-cycle. The arc [FACT, filings]: FY2023 peak EPS $6.65/ADS (≈$6.0 normalized for the +$360M Q4-23 Argentina deferred-tax gain) on $14,869M revenue and 32.4% EBITDA margin; FY2025 EPS $3.66/ADS on $11,981M and 24.3%; TTM EPS $3.80/ADS. Against the eleven-year record (2015–25 average EBITDA margin ≈21.3%; troughs 12–14% in 2015–16/2020; 2018–19 “normal” ≈19.3%), the current 24% sits in the upper half of the historical band. The central mid-cycle estimate used in this report is EBITDA ≈$2.4B and EPS ≈$2.90/ADS [ASSUMPTION], i.e., trailing earnings are roughly 25–30% above estimated mid-cycle.

External environment or the company’s own actions? Overwhelmingly external at the revenue line — the P&L amplifies oil price, rig counts, OCTG pricing, and trade policy (factor analysis: OilPrice is the dominant loading at +0.94, R² 0.55 [FACT; read INTERPRETATION]). The company’s own actions matter at the margin and per-share lines: mix (premium connections, Rig Direct), the Bay City/Koppel US system supplying 90% of US sales domestically in 2025 [FACT], and the buyback that cut the share count 14.5% since 2023 and held EPS roughly flat ($3.61→$3.66/ADS) despite revenue −4% in FY2025 [FACT].

How stable are revenues? Not stable — this is a deep cyclical. Revenue ran $4,294M (2016) → $14,869M (2023) → $11,981M (2025), with a $5,147M COVID trough in between [FACT, XBRL]. Operating margin swung −12.9% (2020) to +28.7% (2023) [FACT]. The mitigant: EBITDA margin has never gone negative in the window (floor ~12%), and Tubes operating margin has held 18.6–19.4% for eight straight quarters — a structurally better floor than 2015–20 [FACT; “structural” is INTERPRETATION].

Outlook for products/services; how big is the market, growing or shrinking, domestic or international? The market is global and drilling-derived: estimated global OCTG consumption ~15–18Mt/yr [ASSUMPTION]; third-party dollar TAM estimates are methodology-poor ($16.8B–$40.4B [FACT]); $25–35B at current prices is defensible [ASSUMPTION]. Tenaris ships ~3.9Mt/yr → ~20–25% global volume share, higher in premium seamless [FACT volumes; share INTERPRETATION]. The demand mix is shifting toward gas drilling (Haynesville rigs +35% y/y; LNG pull), offshore (>$100B FID pipeline; Petrobras $109B 2026–30 plan), and NOC catch-up — all premium-intensive — while commodity-exposed oil shale rolls over [FACT]. Oil OCTG demand peaks are a 2030s story given decline rates (~5.6%/yr oil, ~6.8%/yr gas) require continuous drilling to stand still; the energy transition shrinks the market thereafter [INTERPRETATION], partly offset by CCUS/hydrogen/geothermal tubular demand on the same assets [FACT the qualification programs exist; scale ASSUMPTION].

Sector analog note: the questionnaire’s “free cash flow stability” framing fits Tenaris directly (it is an industrial, not a financial), but with the cyclical’s caveat that FCF is working-capital-dominated at turning points: FCF swung −$121M (2021) → +$3,776M (2023) → $1,983M (2025) [FACT].

3. Business Quality & Competitive Moat

Is the industry getting more or less competitive? Two industries, two answers [INTERPRETATION on FACT record]. Premium seamless OCTG is a stable 3–4 player oligopoly (Tenaris, Vallourec, Nippon Steel/NSCT, JFE) with ~45% collective global share, two decades of stable names, and a decade of exit at the premium end (Vallourec restructured twice; U.S. Steel closed Lorain/Lone Star; NSC closed a seamless mill; TMK sold IPSCO to Tenaris) [FACT]. The commodity API/welded tail is fragmented, China-contestable (TPCO alone: 4Mt seamless capacity), and sees entry only at the localized/protected end (Saudi JESCO/AMTJ, SeAH, JSW) [FACT]. Chinese producers are moving upmarket — “more sophisticated products… more recently in the Middle East” [FACT, 20-F] — so the commodity/premium boundary is eroding from below.

How profitable is the business? ROIC: 17.6% (2022), 21.9% (2023), 11.4% (2024), 10.4% (2025) [FACT, ROIC series]; a hand calculation excluding associates gives ~13.6% for FY2025 [ASSUMPTION on denominator]. Troughs: ~0% (2016), negative (2020) [FACT]. Twelve-year average ≈8–9% [FACT] — below the 15–25% franchise band; a cyclical that earns well above its cost of capital at mid-cycle and roughly at it through full cycles [INTERPRETATION]. FY2025 ROE 11.6% [FACT].

How profitable is the industry — competitors, barriers? Premium seamless sustains 15–20%+ EBITDA margins at the leaders through a war-disrupted quarter (Tenaris 23.7% Q1-26; Vallourec 21.4% Q2-26 [FACT]); commodity peers are price-takers. Barriers, mechanism by mechanism [INTERPRETATION, Greenwald taxonomy]: (a) premium connections (TenarisHydril) — qualification captivity, real but shared with VAM/NSC/JFE; a connection failure in deepwater costs orders of magnitude more than the pipe, so operators don’t re-qualify to save a few percent; (b) Rig Direct — switching friction that buys share retention at cycle bottoms, demonstrably not pricing power: US OCTG prices stayed flat for ~3 quarters after 50% tariffs and only “started to respond” in Q1-2026 [FACT — the single hardest piece of anti-moat evidence]; © local scale + captivity inside trade/localization walls (US 90% self-supplied, Argentina, Mexico) — real but policy-contingent. There is no global cost moat: the 20-F itself concedes structural overcapacity from Chinese investment [FACT].

Can the business be easily understood? Yes — one product family (Tubes = 95% of FY2025 sales [FACT]), one demand driver (drilling activity), one cost driver (scrap/DRI/energy). The complication is not the business but the overlay: tariffs, NOC localization, and Techint-group related-party structure.

Can it be undermined by foreign low-cost labor? For a steel manufacturer this is the live form of the question, and the answer is: partially — only policy prevents it. Chinese mills (Baosteel, Hengyang, TPCO) already contest commodity grades and are probing the premium boundary; the US wall (Section 232 at 50% since 2025-06-04, stacked AD/CVD, the Feb-2026 Thailand circumvention ruling, new April-2026 petitions vs Austria/Taiwan/UAE) and EU/Canada/Mexico/Colombia equivalents are what insulate the profit pools Tenaris occupies [FACT]. Strip the walls and US/Argentina/Mexico margins compress toward Chinese cash costs [INTERPRETATION].

Do brands matter? In premium connections, yes — TenarisHydril and Vallourec’s VAM are qualification franchises; in commodity pipe, no [INTERPRETATION].

Nature of competition; customers’ switching costs? Oligopoly discipline at the premium end (compete on quality, technical support, delivery reliability), price war at the commodity end. Switching costs are high where failure is catastrophic (deepwater, HPHT — years-long API RP 5C5 qualification cycles) and where Rig Direct embeds inventory management and well-site services into the customer’s operation; near zero in US commodity shale OCTG [INTERPRETATION]. Customer diversification is genuine: no customer >10% of sales 2023–25 [FACT]; the NOC framework agreements (Aramco, ADNOC, QatarEnergy, Petrobras, Ecopetrol) are where the captivity lives [FACT]. Counter-evidence on captivity’s limits: Saudi localization evicted even the global leader from leading Aramco commodity share (JESCO/AMTJ) [FACT].

4. Financial Condition & Balance Sheet

Assets not fully recognized on the balance sheet? Two candidates, opposite signs. (a) The associate stakes are over-recognized if anything: Ternium (11.46% held) carried at $1,375M vs $877M market at YE2025 — no impairment taken [FACT]; total associates $1,561M book. (b) The PP&E base is old and 62% depreciated (gross $16.7B, accumulated depreciation $10.4B, net $6,205M [FACT]); replacement cost of the mill network — Bay City alone cost $1.8B greenfield — plausibly exceeds book, which is the standard heavy-industry under-recognition [INTERPRETATION, unquantified]. Net cash of $3.3B (YE25) rising to $3.8B (Q1-26) [FACT] is fully recognized and reconciles to the statement of financial position.

Off-balance-sheet liabilities? Nothing structural found [INTERPRETATION of the filings sweep]. Items to note: the Usiminas/CSN litigation is on balance sheet — $114.9M provision at YE2025 (SCJ-capped exposure ≈BRL 632.5M), appeals pending [FACT]; subordinated loans to Techgen (related-party power plant) of $69M principal [FACT]; operating leases $143M are capitalized [FACT]; gross borrowings trivial at $306M [FACT]. The FPI regime itself is the softer hazard: material events can surface late (the controller’s December 2025 sale appeared only as a 20-F footnote; the Beaver Falls acquisition only as an FS note) [FACT].

How conservative is the accounting? Conservative-to-clean, with two flagged judgments [INTERPRETATION]. Positives: D&A $616M ≈ capex $617M in FY2025 (no under-depreciation flattery) [FACT]; no SBC distortion (LTI/retention cost $52.6M, 0.4% of sales) [FACT]; one-offs are small, footnoted, and both-sided (+$34M antidumping deposit return FY25; −$107M Usiminas provision FY24; +$360M deferred-tax gain FY23) [FACT]; goodwill tests at 13.4–19.4% discount rates produced no impairment in Dec-2024 or Dec-2025 [FACT]; IAS 29 hyperinflation accounting does not apply (Argentine subs are USD-functional; residual exposure ~$8.8M net short ARS + $204M USD Argentine bonds; Argentine subs ≈13% of group equity) [FACT]. Flags: the Ternium carrying value (above) and the goodwill ($1,091M, of which ~$920M traces to the 2007 Hydril acquisition) that has never been impaired [FACT].

How CapEx-hungry is the business? Moderately. Capex: $240M (2021) → $378M (2022) → $619M (2023) → $694M (2024) → $617M (2025); Q1-26 $114M [FACT]. That is ~10–22% of EBITDA post-Bay City, ≈1.0× D&A at the current run-rate, with through-cycle maintenance capex ≈$350–400M [FACT/ASSUMPTION]. The heavier claim on cash is working capital: cash conversion cycle ≈187 days, inventories $3.6B (still ~$1B above the pre-supercycle level), and WC swings of −$2.1B (2022) to +$287M (2024) dominate year-to-year FCF noise [FACT]. No formal FY2026 capex guidance was found — an open question for the Q2-26 release [FACT/OPEN].

5. Capital Allocation & Management

How much FCF, and how is it used? FCF (company definition, OCF − capex): $789M (2022), $3,776M (2023), $2,172M (2024), $1,983M (2025); Q1-26 $503M; TTM ≈$2.07B ≈7.1% yield on the $29.3B cap [FACT]. Cumulative 2023–25 FCF of $7.9B ≈96% of net income over the period — high-quality conversion [FACT]. Uses, in order of magnitude: dividends ($900M cash in 2025), buybacks ($1,362M in 2025), bolt-on M&A, and balance-sheet hoarding [FACT]. FY2025 returns of $2.26B exceeded FCF — funded from the net cash pile [FACT]. The philosophy, stated and observed, is counter-cyclical conservatism: permanent net cash, capex discipline, buy distressed assets at troughs, return the surplus at peaks [INTERPRETATION].

Significant acquisitions recently? None transformational since IPSCO ($1.07B final cash, closed Jan-2020 from a distressed TMK — followed two months later by a $622M COVID impairment, now the core of the US system) [FACT]. Recent bolt-ons: Mattr/Shawcor pipe coating $166M (Nov-2023); Republic Tube processing (2023); Beaver Falls PA scrap yard ~$13–18M (Nov-2025); Artrom Steel Tubes, Romania, €86M cash/debt-free (May-2026) — European seamless capacity ahead of CBAM/safeguard tightening [FACT]. The older record carries the scars: Maverick Tube ($3,185M, 2006, top-of-cycle; impaired in 2008 and 2015) and Hydril (~$2.1B, 2007; $920M goodwill remains, but it bought the premium-connection franchise) [FACT]. Since 2019 every deal has been counter-cyclical or sub-$200M [FACT].

Buying back shares? Yes — aggressively, then abruptly not. Three programs 2023–26: $1.2B (71.7M shares at ~$16.74/share), $700M (36.9M at ~$18.99), ~$1.17B of a $1.2B program (62.4M at ~$18.70) — ~$3.1B total at an average ≈$36/ADS versus $57.96 today, and every share cancelled, taking issued capital from 1,180.5M to 1,009.6M (−14.5%) [FACT]. Then: tranche 2 terminated early (March 2026) to avoid a derivative-structured make-whole to the counterparty bank [FACT], Q1-26 buybacks $90M, and no fourth program as of this report [FACT]. Two flags: the buyback contracts embedded an opaque derivative payout risk disclosed only at termination [FACT], and the controller’s sale into the buyback window (§1, Q2) [FACT].

Issuing large amounts of new shares to insiders? No. Zero equity-based compensation exists for anyone; there is no SBC dilution; directors and senior management together own 0.08% [FACT]. The share count moves in one direction only.

Compensation policy; motivations of management? CEO pay: $10M cash for 2025 ($3M fixed / $7M variable against board-set, category-level-disclosed metrics incl. safety and decarbonization) — no LTIP, no pension; directors get flat fees ($115k; audit committee supplements) with no variable pay [FACT]. A 10D-1 clawback exists [FACT]. The FPI disclosure gap means variable-pay metrics are opaque by US standards [FACT]. Alignment runs through the controlling family, not the pay plan: the Rocca/Techint 64–68% stake received $607M of the ~$900M 2025 dividend — pro-rata and clean [FACT] — so the family’s incentive is per-share value, which is the minority’s incentive; the flip side is that non-family managers have no equity upside and minorities are structurally passengers on a 5-of-11-independent board where the chairman holds a casting vote [FACT; judgment INTERPRETATION].

6. Valuation & Market Data

Is the stock an ADR, MLP, or K-1 issuer? ADR — NYSE American Depositary Shares of a Luxembourg société anonyme, 1 ADS = 2 ordinary shares [FACT, 20-F]. Not an MLP; the K-1 question doesn’t map to a corporate FPI — the correct analogs are (a) FPI status: IFRS, 20-F/6-K reporting, no Forms 3/4/5 insider tape, controlled-company exemptions actively used (no executive sessions, no nominating/compensation committee, non-binding comp vote every four years) [FACT]; and (b) ADS holders receive ordinary corporate dividends subject to Luxembourg withholding, not partnership allocations [FACT/INTERPRETATION]. The ADS ratio is a live data-quality issue: multiple feeds compute market cap and EPS on the wrong share basis (one major feed’s TTM EPS is stale at $3.62 ≈ FY24; filing-basis TTM is $3.80/ADS) [FACT].

Dividend policy? No formal payout policy — dividends decided annually under Luxembourg distributable-reserve rules: November interim + May final [FACT]. Declared per ADS: $0.82 (FY21) → $1.02 (FY22) → $1.20 (FY23) → $1.66 (FY24) → $1.78 (FY25, +7%; ≈49% payout) [FACT]. The record is defensive: defended through 2015–16 (paid >100% of earnings), cut once (FY2019 final, COVID), then more than doubled since FY2021 [FACT]. Current yield ≈3.1% at $57.96 [FACT arithmetic]; forward cash return is dividend-only while the buyback is paused [FACT].

How profitable is the business? FY2025: gross margin 34.4%, operating margin 19.1%, EBITDA margin 24.3%, net margin ~16%; ROE 11.6%; ROIC 10.4–13.6% depending on denominator [FACT]. TTM: EBITDA ~$2.94B on $12,159M revenue (~24.2%) [FACT]. Multiples at $57.96: TTM P/E 15.2×; EV/EBITDA 8.7× trailing (EV $25.5B); ≈20× and ≈10.6× respectively on the $2.90 mid-cycle EPS / $2.4B mid-cycle EBITDA estimate [ASSUMPTION basis; arithmetic FACT]. P/B 1.74–1.82× — the 95.6th percentile of its own history, but that is the mid-2026 cohort norm across tariff-protected steel and re-rated oil services (NUE 96.8th, STLD 99th, MT 97.8th, BKR 97.7th), i.e., a regime signal, not idiosyncratic exuberance [FACT; framing INTERPRETATION]. Own-history pricing pattern: ~5.5× peak EPS at the 2023 boom high, ~0.6× book at the 2020 trough — the market has always priced this stock on the cycle, and at $57.96 it is paying a mid-to-upper-band multiple for above-mid-cycle earnings [FACT prices; INTERPRETATION].

Is net income diverging from cash from operations? No — this is a quality point in Tenaris’s favor. 2023–25 cumulative FCF ≈96% of net income [FACT]. FY2023 net income ($3,958M) was flattered ~$0.6B by Argentina-devaluation items (+$360M Q4 deferred-tax gain, +$218M net FX gains) — normalize that year before comparing [FACT]. The persistent non-cash wedge is small: equity in earnings of associates runs ~+$80M/yr against ~$62M of dividends actually received from Ternium in 2025 [FACT]. Working capital, not earnings quality, is what moves OCF year to year [FACT].

7. Risks & Downside

What factors would cause the stock to decline? In rough order of fragility [INTERPRETATION, ranked on the evidence reviewed]:

1. Section 232 rollback / trade-policy reversal. Estimated $300–600M of EBITDA is tariff rent [ASSUMPTION]. A rollback compresses EBITDA and the warranted multiple simultaneously (commodity-steel cohort trades ~5–6× EV/EBITDA [FACT]); the valuation work puts the tariff-reversal standalone case — no demand downturn required — at roughly $29–36/ADS [ASSUMPTION scenario]. This is the single most load-bearing assumption in the price. Management itself says the 50% level is “a key component of the 232” it doesn’t expect to change [FACT quote; treat as hypothesis].
2. Hormuz/Iran war persistence. Q2-26 is guided down; H2-26 recovery assumes reopening “in the short term” [FACT]. July-2026 re-escalation reports are unconfirmed but, if accurate, undercut the guidance’s core assumption [FACT/OPEN]. The print lands 2026-08-06.
3. Oil-price normalization. The stock’s dominant factor loading (OilPrice +0.94 [FACT]) has stalled over the last quarter (63d oil factor −2.8% [FACT]); the IEA base case is $75–80 Brent with surplus re-emerging late 2026/27 if Hormuz normalizes [FACT]. The 10-year record shows what an oil-cyclical at −10% off its high can do: max drawdowns −75% (10-y) / −83% (lifetime) [FACT].
4. Demand-side rollover. US shale activity rolling over, 2026 a second consecutive down year for global upstream capex, Saudi destocking, Pemex recovery still “limited” five quarters into the refinancing story, Mexico downturn [FACT]. Offsets: Argentina early-cycle, Brazil/Guyana offshore ramp [FACT].
5. Company-specific. Ternium stake carried $500M above market (impairment watch) [FACT]; Usiminas/CSN litigation ($114.9M reserved, appeals pending) [FACT]; Canada CITT duties on Tenaris OCTG (Apr-2026) [FACT]; Saudi localization template risk [FACT]; Argentina country risk (~425bp, political continuity into 2027) [FACT].

Risk of a catastrophic loss? Low in the solvency sense: $3.8B net cash, $306M borrowings, liabilities/assets 0.16, profitable at every cycle bottom in the window, no maturities of consequence [FACT]. The catastrophic scenario is not bankruptcy but a permanent margin regime change — simultaneous trade-barrier collapse and China moving upmarket — which would compress the business toward commodity-steel economics [INTERPRETATION].

Chance of a total loss? Effectively nil on the observable balance sheet [INTERPRETATION]. The realistic downside framing is the bear scenario of $34–44/ADS (≈−33%) on EBITDA $1.8–2.2B at 7–8× with associates haircut 50% [ASSUMPTION scenario], and the historical floor-pricing evidence (~0.6× book in 2020 = $9.15; ~2.7× trough P/S in 2016 [FACT]) for what a true washout looks like — a drawdown, not a wipeout.

8. Recent News & Events

Has the business environment changed recently? Yes, twice in opposite directions [FACT]. First, the 2025 trade regime: Section 232 doubled to 50% (2025-06-04), exemptions dead, derivative loophole closed (Apr-2026), OCTG-specific AD/CVD stacked on top — a structural improvement in Tenaris’s US profit pool. Second, the 2026 war: the Iran conflict closed the Strait of Hormuz from ~early March 2026, deferring Middle East shipments, raising freight/insurance costs, and spiking then un-spiking Brent (~$120 peak April → ~$84–87 post-ceasefire) [FACT]. Net: US price/mix tailwind, Middle East volume/logistics headwind, Q2-26 guided down, results due 2026-08-06 [FACT].

Significant acquisitions? Artrom Steel Tubes (Romania, seamless, €86M, May-2026) — the largest in ~2.5 years and a bet on the EU CBAM/safeguard wall [FACT]; Beaver Falls scrap yard (Nov-2025, vertical integration behind the tariff wall) [FACT]; Sault Ste. Marie CAD$306M investment with government backing (May-2026), partly an answer to the Canadian CITT duties [FACT; motive INTERPRETATION].

Change in accounting policies? None found in the corpus — IFRS basis, depreciation policy, and APM definitions are consistent across the window; the only accounting-adjacent items are the litigation provision movements and the (non-)application of IAS 29, both above [FACT/INTERPRETATION].

Recent changes — new markets, facilities, management? Management: the first non-Rocca CEO — Gabriel Podskubka (COO since 2023) appointed CEO 2026-05-06, confirmed at the May-12 AGM; Paolo Rocca remains Chairman [FACT] — a continuity signal that nonetheless ends 24 years of combined chairman-CEO control [INTERPRETATION]. Facilities/markets: Suriname service center opened on schedule (Jun-2026) for TotalEnergies’ GranMorgu; second Argentine wind farm (95MW) online Sep-2025 — Campana now effectively self-powered; British Columbia service yard for Montney/LNG; Venezuela restart serving Chevron (~$50M revenue guided for 2026) [FACT]. Capital-return regime change: buyback terminated and not renewed; controller sold shares for the first time in five years; dividend still raised +7% [FACT]. On net, the last six months improved the business environment while downshifting the capital-return engine — the tension the Q2-26 print will start to resolve [INTERPRETATION].

---

Open Questions (not answerable from the public sources reviewed)

1. Q2-2026 results (due 2026-08-06, after this report): Hormuz-quarter EBITDA, and whether buyback program #4 is announced.
2. Status of the Strait of Hormuz as of 2026-08-05 — July re-closure reports are single-sourced (blog-grade); drives H2-26 guidance credibility.
3. Precise tariff rent: the Bay City domestic-melt vs. imported-tube split and net tariff benefit per tonne are not disclosed; the $300–600M EBITDA estimate is an ASSUMPTION with wide error bars.
4. Premium-product mix % and the premium-vs-commodity price spread — not disclosed; would settle the pricing-power question.
5. Rig Direct % of OCTG sales — no longer disclosed; the “>60% of volume” blog figure is unsourced.
6. FY2026 capex guidance — none found in the Q1-26 or Feb-26 releases; ~$600M run-rate assumed.
7. Rationale for the Techint 23.6M-share sale beyond the disclosed stake-management framing (estate/RP STAK restructuring vs. diversification) — not explained in filings.
8. QatarEnergy North Field LTA exact award date/value — appears only in 20-F narrative, no standalone 6-K.
9. Artrom acquisition terms beyond the €86M headline (capacity, condition, synergy framing) — not detailed in the 6-K beyond the headline figures.
10. Usiminas/CSN litigation final outcome and timeline — $114.9M reserved, appeals pending.
11. Current Argentine export-duty regime on steel pipes — not re-verified for this report.
12. Tenaris Venezuela nationalization compensation details (Tavsa/Matesi/Comsigua) — not re-verified.
13. Short interest / days-to-cover — not available from the sources reviewed.
14. Vallourec clean EV/EBITDA — the single best comp multiple could not be computed from the available data (ADR/Paris data gaps).
15. Pemex’s actual 2026 drilling plans — management itself says plans are undefined; the “recovery” framing remains unverified five quarters in.
16. ROIC denominator basis in the data feed’s 10.4% FY25 ROIC vs the 13.6% hand calculation — unreconciled.

End of Appendix A. Facts, interpretations, and assumptions are labeled inline; nothing in this appendix constitutes investment advice, a recommendation, or a price target.

APPENDIX B — Source Appendix — Tenaris S.A. (NYSE: TS)

Source Appendix | Report date: 2026-08-05 Scope: every source cited in the report above. All sources accessed 2026-08-05 unless noted. Tenaris SEC identifier: CIK 0001190723 (Luxembourg FPI; 20-F/6-K regime; IFRS; USD). Primary corpus: the complete Tenaris record on SEC EDGAR — 207 6-Ks (2021-08 → 2026-08), 5 20-Fs (FY2021–FY2025), 5 Form SDs, plus 5 IRANNOTICE items (CIK 0001190723).

---

Tier 1 — SEC filings (SEC EDGAR, CIK 0001190723)

1a. Annual reports (Form 20-F) — 5/5 present, all read

#	Filing	Period	EDGAR filed	Accession	EDGAR reference
1	Tenaris 20-F FY2025	FY2025	2026-03-31	000155485526000490	EDGAR company filings, CIK 0001190723
2	Tenaris 20-F FY2024	FY2024	2025-04-01	—	EDGAR company filings, CIK 0001190723
3	Tenaris 20-F FY2023	FY2023	2024-03-28	—	EDGAR company filings, CIK 0001190723
4	Tenaris 20-F FY2022	FY2022	2023-03-31	—	EDGAR company filings, CIK 0001190723
5	Tenaris 20-F FY2021	FY2021	2022-03-31	—	EDGAR company filings, CIK 0001190723

1b. Quarterly earnings 6-Ks — all 20 prints Q2’21→Q1’26 reviewed (accession suffixes)

#	Filed	Period	Accession suffix
6	2021-08-05	Q2’21	…5587
7	2021-11-04	Q3’21	…7578
8	2022-02-17	Q4’21/FY21	…1150
9	2022-04-28	Q1’22	…2912
10	2022-08-04	Q2’22	…5373
11	2022-11-04	Q3’22	…7116
12	2023-02-16	Q4’22/FY22	…1034
13	2023-04-27	Q1’23	…2650
14	2023-08-03	Q2’23	…4973
15	2023-11-02	Q3’23	…6653
16	2024-02-23	Q4’23/FY23	…0937
17	2024-04-29	Q1’24	…2303
18	2024-08-01	Q2’24	…4365
19	2024-11-07	Q3’24	…6114
20	2025-02-20	Q4’24/FY24	…0973
21	2025-05-01	Q1’25	…2693
22	2025-07-31	Q2’25	…4924
23	2025-10-30	Q3’25	…6840
24	2026-02-19	Q4’25/FY25 (f6k_021826pr)	…0948
25	2026-05-07	Q1’26 PR + interim FS (f6k_050626, f6k_050626fs)	…3150 / …3164

Interim-FS companions (H1’21/H1’23/H1’24, FY FS 6-Ks) are also on EDGAR.

1c. Key event 6-Ks

#	Date	Event	Accession
26	2026-05-07	CEO succession — Gabriel Podskubka appointed CEO; Rocca stays Chairman	000117184326003151
27	2026-05-11	Artrom Steel Tubes (Romania) acquisition PR	…3221
28	2026-05-13	AGM/EGM: $0.89/sh dividend; board 10; Podskubka confirmed CEO; EGM cancels 62,355,174 treasury shares → issued 1,009,639,756	…3322 / …3354 / …3355
29	2026-02-23/24	Buyback program #3 tranche 2 terminated early (eff. 2026-03-03; 29,295,219 sh / ~$583.6M)	…1030 / …1031
30	2025-05-27/28	Buyback program #3 announced (up to $1.2B)	…3473
31	2025-06-09 / 2025-10-01 / 2025-11-03	Program #3 tranche-1 commence / complete ($600M) / tranche-2 commence	…3775 / …6202 / …6874
32	2025-09-19	Techint Holdings Schedule 13D/A (passive stake rise; 67% floor)	…5985
33	2025-12-18	Techint 13D/A + repurchased shares ≥5% of voting rights	…7991
34	2024-11-12 / 2025-03-05	Buyback program #2 ($700M) announced / completed	…6210 / …1253
35	2023-11-06 → 2024-08-05	Buyback program #1 ($1.2B): commence, tranches 2–4, completion	…6739, …0955, …2774, …3452, …4420
36	2024-06-18 / 2024-12-09	Usiminas/CSN: SCJ indemnification order; clarification rejected, fees capped	…3499 / …6795
37	2023-03-30 / 2023-07-03	Usiminas control-group participation increase / completion	…1992 / …4297
38	2023-08-15 / 2023-12-01	Mattr (Shawcor) coating acquisition announced / completed	…5303 / …7373
39	2022-06-03	SEC FCPA settlement (legacy Brazil Confab) — $78M; DOJ closes inquiry	…4105
40	2022-07-08 / 2023-02-06	Benteler Shreveport deal announced / terminated	…4785 / …0694
41	2021-08-17 / 2022-05-27	Rocca acquitted in “Notebooks” case; Italian case dismissed	…6020 / …3991
42	2026-03-06	PDMR notice — Podskubka sells 1,973 ADS	…1374
43	2024-11-22	Repurchased shares reach 5% of voting rights (Lux transparency)	(EDGAR, 2024-11-22)
44	Weekly buyback-progress 6-Ks 2023-11 → 2026-05 (cease after 2026-05-13)	series	(EDGAR series)

1d. Other EDGAR items

#	Item	Detail
45	Form SD ×5 (2022→2026, latest 2026-05-22)	EDGAR (CIK 0001190723) — specialized disclosure, routine
46	IRANNOTICE ×5	routine FPI Iran notices, immaterial, not reviewed in depth
47	EDGAR submissions/index extract	EDGAR submissions index (2021-08→2026-08: 207 6-K, 5 20-F, 5 SD)
48	SC 13D/A amendments (Techint Holdings)	furnished via 6-Ks #32–33 above

Tier-1 count: 48 catalogued items covering 217 filed documents (5 20-F + 207 6-K + 5 SD).

---

Tier 2 — Transcripts & earnings-call material

#	Source	Date	Location / note
49	Tenaris Q1-2025 earnings call transcript (ROIC.ai MCP)	call 2025-05-01	ROIC.ai transcript feed — identity verified as genuine Tenaris content (Rocca/Sardagna, OCTG subject matter)
50	Q2-2025 call transcript (ROIC)	2025-07-31	ROIC.ai transcript feed
51	Q3-2025 call transcript (ROIC)	2025-10-31	ROIC.ai transcript feed
52	Q4-2025/FY25 call transcript (ROIC)	2026-02-19	ROIC.ai transcript feed — last call in the series
53	Q1-2026 results PR (read in full) + call notes	2026-05-06/07	6-K filed 2026-05-07 (EDGAR) plus call notes — the Q1’26 call transcript was unavailable from ROIC.ai; full text paywalled at Seeking Alpha/GuruFocus, not used
54	Q1-2026 call summaries (secondary)	2026-05	finsee.ai, AlphaSense, BrokerChooser — used only to supplement #53; management quotes treated as hypothesis

Tier-2 count: 6.

---

Tier 3 — Company IR / press releases (tenaris.com; most distributed via GlobeNewswire)

#	Release	Date
55	Petrobras 3-year casing award (pre-salt & Equatorial Margin)	2025-10-27
56	Beaver Falls, PA scrap-yard acquisition (Steel Recycling Services / SA Recycling)	2025-11-13
57	Buyback tranche-2 launch (up to $600M under $1.2B program)	2025-11-02
58	Buyback tranche-2 early termination	2026-02-23
59	Q4/FY2025 results PR	2026-02-18/19
60	CEO succession (Podskubka CEO; Rocca Chairman)	2026-05-06
61	Q1-2026 results PR	2026-05-06
62	Artrom Steel Tubes acquisition (€86M cash/debt-free from GLGH Steel)	2026-05-08
63	AGM 2026 resolutions ($0.89/sh dividend approved)	2026-05-12
64	Sault Ste. Marie CAD$306M investment (federal/provincial backing)	2026-05-22
65	Suriname (Paramaribo) service center — GranMorgu support	2026-06-30
66	Tenaris Saudi Steel Pipes first place, Aramco Local Manufacturers Quality Awards	2026-02-06
67	Ecopetrol commercial agreement renewal (2 years)	2025-04-14
68	Mattr coating acquisition completion	2023-11-30
69	SSPC 47.79% acquisition releases	2018-09-25, 2019-01-21
70	IPSCO acquisition release; TMK background	2019
71	Conroe sucker-rod mill; Veracruz second line	2019-11-13; 2023-08-14
72	Maverick Tube acquisition release	2006-06-12
73	IR press-release listing page (checked 2026-08-05 — no buyback #4)	accessed 2026-08-05

Tier-3 count: 19.

---

Tier 4 — Data feeds (all accessed 2026-08-05)

#	Feed	Files / usage	Data-quality caveats
74	ROIC.ai MCP (profile, income/balance/cash-flow, per-share, profitability/ROIC series, valuation, news feed 50 items 2026-04-01→2026-08-05, transcripts)	reconciled to filings	DEFECT: get_enterprise_value.market_cap ~2x overstated for TS (ordinary shares × ADS price); use diluted_mkt_cap or hand-build ($29.3B cap / $25.5B EV at $57.96). cf_cap_expenditures garbled ($10M shown for 2024; real capex $694M per XBRL). ROIC denominator basis unreconciled (10.4% feed vs 13.6% hand calc FY25).
75	AZI (AnalytIQ) fundamentals / valuation_index, 2026-08-04	snapshot dated 2026-08-04: price $57.96, P/B 1.82 (95.6th pct), P/S 2.58 (80.3rd), composite 81.8	STALE: ttm_eps $3.6156 ≈ FY24 EPS — discard P/E 16.0 & P/E percentile 69.5th; filing-basis TTM EPS $3.80/ADS → P/E 15.2x (AZI’s own snapshot trailing_pe 15.31 confirms). P/B & P/S percentiles share-count-robust, usable.
76	AZI daily price CSVs (adjusted + unadjusted closes through 2026-08-04)	daily adjusted price series (lifetime; five-year event map) plus peers SLB/HAL/BKR/VLOWY/VK.PA/X	X (US Steel) series ends 2025-06-20 (Nippon delisting)
77	FactorsToday API (loadings, leaderboard, stock-info, specific-vol, related-stocks, factor-returns)	API pulls dated 2026-08-04/05; TS covered despite ADR (Energy / Oil & Gas Equipment & Services)	none material; R² 0.55; annualized m3/m6 figures de-annualized for use
78	EDGAR XBRL companyfacts ifrs-full	EDGAR companyfacts API pull — revenue/NI 2015–25, capex, dividends, treasury purchases, weighted shares	primary-grade; used to build 11-year cycle table
79	EDGAR full-text/submissions index	EDGAR submissions index	ends 2026-05-22 — Q2’26 6-K not yet filed as of 2026-08-05

Tier-4 count: 6 feeds.

---

Tier 5 — Industry / trade / regulatory

#	Source (publisher, date)	Used for
80	Baker Hughes rig count (bakerhughes.com, accessed 2026-08-05)	US 587–588 rigs (+45–48 y/y); Canada 204–219; intl 1,073 (Jun-26)
81	SteelOrbis, 2026-07-27	rig-count corroboration
82	Trading Economics, 2026-07-24 / 2026-08-05	rigs; HRC ~$1,189/t +41% y/y; iron ore/coal
83	GMK Center, 2026-05-13	US OCTG NA FOB +$220/t to $2,274/t (Apr-26)
84	Pipe Logix OCTG benchmark ~$2,073/t (via market.us; Pipe Logix not directly accessible)	US OCTG price level — cited via secondary, not the Pipe Logix primary
85	Vallourec Q2-2026 results release, 2026-07-30	tubes vol −17% y/y, EBITDA/t $722 (+31%), inventories <5-yr avg, net cash €/$183M
86	Vallourec investor deck 2025 / OCTG product page 2025-08-26 (solutions.vallourec.com)	capacity ~1.98Mt post-restructuring; VAM franchise; Rystad/Preston-based market sizing
87	Section 232 proclamations — 25% reimposed 2025-03-12; 50% effective 2025-06-04; derivative-products full-customs-value proclamation dated 2026-04-02	Federal Register proclamations; corroborated by steel-cohort company disclosures (Nucor, Gerdau, Cleveland-Cliffs, Steel Dynamics, ArcelorMittal) and the Tenaris FY2025 20-F
88	Federal Register, 2026-02-27	Commerce FINAL affirmative circumvention ruling — Chinese seamless OCTG via Thailand
89	Trade.gov (ITA), 2026-04-23	AD/CVD initiation vs OCTG from Austria/Taiwan/UAE (margins 42.92–93.59%)
90	Clark Hill (clarkhill.com), 2026-04-08	AD/CVD petition detail
91	USITC pub 5381 (usitc.gov)	prior OCTG AD/CVD orders history
92	CBSA (cbsa-asfc.gc.ca), 2025-08-26	Canada OCTG5 dumping investigation
93	Canada CITT final AD duties on OCTG (via GlobeNewswire news), 2026-04-21	Canada headwind for TS
94	Recycling Today, 2026-05-21 / 2026-07-23	busheling ~$415/gt; RMDAS scrap trends; HRC-scrap spread ~$719/st
95	steelindustry.news, 2026-01-20	scrap pricing
96	AISI (aisi.org / aisusteel.org), 2026-05-26 / 2026-07-25	US steel imports −30% YTD-26; raw-material complex
97	Construction Dive, 2026-06-05	Section 232 effects
98	ST&R (strtrade.com)	232 exemption-termination detail
99	EIA (eia.gov), 2026-02-13	record US gas production 2026–27; Haynesville +1.2/+1.6 Bcf/d
100	Mercer Capital, 2026-01-16	Haynesville rigs +35% y/y
101	Gabelli, 2026-01-29	LNG exports +13.5 Bcf/d 2025–2030; transition timeline
102	Oilprice.com, 2025-02-12	supermajor capex discipline (Chevron/Shell)
103	Africa Oil+Gas Report, 2025-12-05	global exploration spend $50–60bn/yr
104	Energy News Beat, 2026-01-29	IEA ~$540bn/yr upstream requirement
105	MarketIntelo, 2026-06-10	OCTG TAM $16.8bn; Tenaris+Vallourec+Nippon ~45% share — secondary, methodology-poor (flagged)
106	industryresearch.biz / Fortune Business Insights	alternative TAM $31.4bn / $40.4bn — methodology-poor (flagged)
107	Intelevo Research, 2026-03-30	seamless ~84% of OCTG — low-quality (flagged)
108	SteelBrisk, 2026-06-16	Tenaris largest seamless producer >3Mt/yr
109	ReportPrime (2024) / MarketGrowthReports (2026-06)	Tenaris share ~14% / ~18% — noisy third-party estimates (flagged)
110	Boursorama/AOF, 2025-04-08	Tenaris+Vallourec “~12% each” co-leaders
111	Saudi Press Agency (spa.gov.sa), 2026-02	Aramco iktva 70% local content, 75% by 2030
112	Baird Maritime, 2026-05-12	ADNOC $55bn local-manufacturing push
113	VacaMuertaXP, 2026	Vaca Muerta ~900kb/d; shale 70.6% of output
114	Brazil Energy Insight, 2026-07-27	Vaca Muerta / YPF Plan 4×4 detail
115	BNamericas, 2025-11-05	$3bn Vaca Muerta Sur pipeline
116	InfoEnergia, 2026-05-28	2026 Argentina bid round (15 blocks)
117	Discovery Alert (discoveryalert.com.au), 2026-05-18 / 06-27 / 07-10 / 07-11	Hormuz war timeline; Brent peak ~$120 Apr-26; ~$84–87 post-ceasefire — secondary blog-tier, flagged
118	MightyShipping (mightyshipping.com), 2026-07-21	July Hormuz re-closure claim — weak sourcing, UNVERIFIED
119	Click Petróleo e Gás, 2026-02-19	Brazil offshore OCTG demand
120	Ziro Market, 2026-06-12	Hormuz freight/insurance +30–50%
121	RigPal, 2026-07-22	IPSCO/TMK capacity background
122	TPCO International (tpcointernational.com)	TPCO 4.45Mt pipe / 4Mt seamless capacity
123	AIST (aist.org), 2020-01-03	IPSCO closing $1.07B
124	PRNewswire, 2017	Bay City $1.8B greenfield completion
125	Pittsburgh Business Times (bizjournals.com)	Beaver Falls price ~$13.3M
126	Recycling Today / Beaver County Times, 2025-11	Beaver Falls acquisition corroboration
127	OMR (omrglobal.com)	AlphaRod 2.0 launch Apr-2024
128	Valve World, 2026-04-02	Vallourec VAM® 21 contract wins

Tier-5 count: 49.

---

Tier 6 — News articles

#	Article / feed	Publisher, date	Note
129	ROIC.ai get_company_news feed, 50 items 2026-04-01→2026-08-05	mixed wires	triaged: CITT duties, Q1 print, succession, Artrom, AGM, Sault Ste. Marie, Suriname all captured; remainder noise (Zacks/SA listicles, 13F filler; one false-positive “TS” = TSXV:NTLX, excluded)
130	“Picks-and-shovels play for an oil supply crisis” framing	Forbes, 2026-04-24	sentiment only, not used as fact
131	Hormuz/oil-spike coverage	Benzinga, 2026-05-04	event-map context
132	Tenaris releases via GlobeNewswire (Apr–Jun 2026 cluster)	GlobeNewswire, 2026-04→06	duplicates of Tier-3 IR items
133	Tenaris marketing-strategy / competitors blogs	matrixbcg.com, 2026-04-04	LOW quality — “>60% Rig Direct share” claim unsourced; flagged DO-NOT-USE

Tier-6 count: 5 feed/items.

---

Tier 7 — Peer-company filings and public disclosures (sector cross-read — NOT primary sources for Tenaris itself)

#	Company / public filings	Used for
134	Gerdau (GGB) — 20-F / results releases	steel cohort comps, global overcapacity 640→721Mt, China exports ~119Mt, Brazil quota
135	ArcelorMittal (MT) — 20-F / results releases	policy-manufactured profitability framing; P/B-over-P/E valuation discipline; ~$150M/qtr tariff drag
136	Cleveland-Cliffs (CLF) — 10-K / results releases	tariff dependence; HRC ~$1,074
137	Nucor (NUE) — 10-K / results releases	Section 232 timeline (proclamation 2026-04-02), import share 22%→15%, HRC ~$1,130, spread $719
138	Steel Dynamics (STLD) — 10-K / results releases	steel-cycle verdict; valuation percentiles
139	YPF — 20-F / results releases	Vaca Muerta rig/frac detail, Tecpetrol Los Toldos $6.4bn, cepo/country-risk path
140	Petrobras (PBR-A) — 20-F / results releases	$109B 2026–30 plan, Búzios FPSO sequence, Brazil ~4.2MMbbl/d
141	SLB — 10-K / results releases	OFS capex cycle (−2–3% 2026), offshore FID pipeline, multiples
142	Halliburton (HAL) — 10-K / results releases	NAM shale exposure; cheapest OFS multiple ~9.4x
143	Baker Hughes (BKR) — 10-K / results releases	2026 spend “modestly below”; ~13.7x EV/EBITDA
144	TechnipFMC (FTI) — 10-K / results releases	subsea tree cycle ~296/2026; inbound −3.6% 2025; ~14.8x

Tier-7 count: 11.

---

Sources cited but NOT locatable / not independently verified (cut-or-flag list)

1. Pipe Logix primary OCTG price series — paywalled; cited only via secondary (market.us). Used directionally.
2. Q1-2026 earnings call full transcript — ROIC 404; Seeking Alpha/GuruFocus 403. Covered by PR + secondary summaries.
3. Hormuz “fourth closure” (July 2026) — only mightyshipping.com blog; not confirmed by quality press. UNVERIFIED; treated as open risk.
4. Rig Direct “>60% of OCTG volume” — matrixbcg blog, unsourced; company does not disclose %. EXCLUDED.
5. Morningstar moat rating for TS — page snapshot stale/garbled; not verified.
6. Vallourec clean EV/EBITDA multiple — not computable from the available data (ADR/listing gaps).
7. QatarEnergy North Field LTA date/value — 20-F narrative only; no dedicated 6-K or locatable PR.
8. Tenaris US domestic-melt vs import split / net tariff cost per tonne — not disclosed in filings.
9. Montney/BC “service yard” — mentioned on Q3’25 call only; no filing located.
10. Tenaris Venezuela nationalization compensation details (Tavsa/Matesi/Comsigua) — not re-verified.
11. FY2014/FY2016 capex; Bay City peak-year capex ~$787M — pre-2019 20-Fs not reviewed; approximate.
12. Short interest / days-to-cover — not available from the sources reviewed.
13. Q2-2026 results — scheduled 2026-08-06, one day AFTER report date; not available.
14. Artrom deal terms beyond €86M — not extracted from 6-K …3221.
15. Argentine export-duty regime on steel pipes (current status) — not re-verified for this report.

---

Verification sweep — 15 highest-stakes claims checked against the primary filings (2026-08-05)

#	Claim (as used in this report)	Result	Filing reference
1	FY25 revenue $11,981M	VERIFIED — “net sales … $11,981 million in 2025, compared to $12,524 million in 2024”	20-F FY2025 (2026-03-31), OFR
2	FY25 EBITDA $2,910M	DISCREPANCY (minor) — company-reported APM FY2025 EBITDA is $2,899M (24.2% margin) per the FY25 results 6-K PR table; $2,910M is a hand-calc (op income $2,293M + D&A $616M ≈ $2,909M) used in the financial analysis. Delta $11M (~0.4%) — immaterial to conclusions; the report cites the $2,899M company-reported figure	6-K 2026-02-19 f6k_021826pr, FY table + footnote
3	FY25 EPS $3.66/ADS ($1.83/share)	VERIFIED — FY25 results PR FY column: EPS/ADS 3.66 (FY24 3.61); shareholders’ NI $1,933M	6-K 2026-02-19; 20-F note U
4	Q1-26 sales $3,100M / EBITDA $735M (23.7%) / net cash $3.8B / EPS $1.07/ADS	VERIFIED — all four match the Q1-26 6-K PR tables and text (“net cash position amounted to $3.8 billion at March 31, 2026”)	6-K 2026-05-07 f6k_050626
5	Net cash YE25 $3.3B	VERIFIED — “net cash position of $3.3 billion at December 31, 2025”; hand-reconciles (572.6 + 2,306.8 + 758.1 − 305.7 ≈ $3.33B)	20-F FY2025, OFR + SoFP
6	Share count 1,009,639,756 ordinary post May-2026 cancellation	VERIFIED — EGM reduced issued capital “from US$1,071,994,930 to US$1,009,639,756 represented by 1,009,639,756 ordinary shares” (62,355,174 treasury shares cancelled 2026-05-12)	EGM 6-K 2026-05-13; 20-F subsequent events
7	1 ADS = 2 ordinary shares	VERIFIED — “American Depositary Shares … represent two shares each”; arithmetic cross-check $1.07/ADS = $0.54/share (Q1-26)	20-F FY2025 cover/Item 10
8	Dividend $1.78/ADS FY25 ($0.89/share, +7%)	VERIFIED — “$0.89 per share ($1.78 per ADS), or approximately $0.9 billion”; interim $0.29 paid 2025-11; final $0.60/sh paid 2026-05-20	20-F FY2025; 6-Ks 2026-02-19 & 2026-05-13
9	Buyback program #3 ~$1,168M executed, terminated 2026-03-03	VERIFIED — tranche 1 ~$584M (33,059,955 sh) + tranche 2 ~$583.6M (29,295,219 sh) = ~$1,167.6M ≈ 97% of $1.2B; “effective March 3, 2026, the second tranche of the third share buyback program” terminated (counterparty make-whole mechanics)	20-F FY2025 pp.202–203; 6-K 2026-02-23/24
10	Techint Holdings sale of 23.6M shares (13D/A)	VERIFIED — “Between December 9, 2025, and February 28, 2026, Techint Holdings sold 23,600,000 ordinary shares”; stake 64.37% issued / 68.34% voting at 2026-02-28	20-F FY2025 Major Shareholders fn.(1); 13D/A via 6-Ks 2025-09-19/2025-12-18
11	Usiminas litigation provision $114.9M (YE25)	VERIFIED — provisions include “$114.9 million and $89.4 million respectively [2025/2024], related [to] the ongoing litigation related to the acquisition of participation in Usiminas”	20-F FY2025 notes 6/24/27(i)
12	FY23 Q4 +$360M net deferred-tax gain (Argentina devaluation)	VERIFIED — “net deferred tax gain of $360 million”	6-K PR 2024-02-23 (FY23 results); 20-F FY2023 MD&A
13	Ternium stake carrying $1,375M vs market $877M	VERIFIED — carrying $1,375.1M vs market ~$877.3M at ADS $38.19 (YE2025); company tested, no impairment	20-F FY2025 note 14
14	CEO succession: Podskubka CEO, Rocca Chairman (2026-05-06)	VERIFIED — “Board of Directors appointed Gabriel Podskubka as Chief Executive Officer. Paolo Rocca will continue to serve as Chairman of the Board.” (6-K, acc. 000117184326003151); confirmed at 2026-05-12 AGM	6-K 2026-05-07 / 2026-05-13
15	FY25 shareholders’ net income $1,933M	VERIFIED — FY column of results PR ($2,036M FY24)	6-K 2026-02-19

Result: 14/15 VERIFIED against primary filings; 1 minor DISCREPANCY (FY25 EBITDA $2,910M → correct company-reported figure $2,899M; no analytical impact).

Consistency notes

• The Ecopetrol renewal is dated February 2025 in the filing record (20-F FY2025) versus April in the press announcement — the 2025-04-14 tenaris.com PR is the public announcement of the same renewal. Both cited; filing date governs.
• FY25 net income appears as $1,933M (shareholders) and $1,973M (total incl. NCI) across sources — both reconcile to the PR/20-F; not an error; the basis is stated where used.
• Q1’26 EBITDA is cited as “$735m (23.7%)” — consistent with the PR; the “5th straight ~24% quarter” framing is consistent with the quarterly series (23.7/23.9/25.3/23.7/23.8).

---

No buy/sell recommendation and no price target are made anywhere in this appendix. Primary sources take precedence over secondary throughout; secondary/blog-tier items are individually flagged.