THRM — Gentherm Incorporated · 2026-09-11 · Verdict: WATCH · Conviction 2
Price $38.33 (screen row, priced 2026-09-11; no live quote) · Mkt cap $1.177B · EV $1.271B (pro forma for IME) · EV/normalised after-tax operating profit 17.3x · Adjusted FCF yield 7.9% (2026 guidance midpoint) · Net debt $60.1M at 2026-06-30, $94.1M pro forma · ADV $11.4M Sources read: 10-K 2026-02-19 (Items 1, 1A, 7), 10-Q 2026-06-30 (filed 2026-07-23), DEF 14A 2026-04-01, 8-Ks 2026-03-25, 2026-04-23 (x2), 2026-05-19, 2026-07-02, 2026-07-23 (EX-99.1 Q2 release), Form 4s (12m to 2026-08-18). No transcript or prepared remarks were filed as an exhibit; the bundle's "transcript" file is the Q1 2026 press release.
Desk stats - Revenue trend: FY2025 product revenues $1,498.6M, +2.9%, from $37.1M of automotive volume and $16.7M of FX less $11.4M of pricing (10-K 2025, Item 7). Q2 2026 $416.2M, +11.0% (+9.5% ex-FX) on $40.2M of volume, $5.3M FX, less $4.4M pricing; H1 2026 +8.4% ex-FX. Automotive Climate and Comfort Solutions grew 14.1% and beat light-vehicle production in its markets by 14 percentage points (8-K 2026-07-23, EX-99.1). Content growth, not market growth. - Normalised after-tax operating profit: trailing twelve months to 2026-06-30, GAAP operating income $63.6M (FY2025 $82.7M plus H1 2026 $21.974M less H1 2025 $41.070M). Add back $34.3M of Modine and IME merger and acquisition expenses inside SG&A (FY2025 $6.6M, 10-K Item 7; H1 2026 $27.659M, 10-Q Item 2). Impairment add-back is zero: the $2.501M charge is FY2024's, for equipment with no future use, and FY2025 is nil (10-K 2025, Item 7). The $2.196M Northville headquarters loss falls in both FY2025 and H1 2025 and cancels out. Restructuring of $18.5M is deliberately not added back: it ran $13.1M, $12.5M and $12.7M in FY2024, FY2025 and H1 2026 alone, across three plans committed to since February 2025 (10-Q Item 2). Normalised $97.9M, taxed at 25% = $73.4M, against GAAP after-tax $47.7M. Adding restructuring back too gives $87.3M. - EV / normalised after-tax profit: 17.3x. EV from the 2026-06-30 balance sheet: revolver $260.0M plus finance leases $13.258M = $273.258M total debt, less cash $213.173M = net debt $60.085M (8-K 2026-07-23, net leverage table), plus $34.0M for the IME acquisition that closed 1 July 2026 from cash and revolver (10-Q Item 2), plus 30,705,208 shares at $38.33. Operating lease liabilities of $51.8M excluded and noted. On the looser normalisation 14.6x; on GAAP 26.6x. - Leverage: net debt / normalised EBITDA 0.32x on the company's trailing Adjusted EBITDA of $187.7M, 0.50x pro forma for IME. Genuinely unlevered today, but SpinCo's $250M delayed-draw term loan becomes subsidiary debt at the Modine close (10-Q Item 2). - Is the growth sustainable? Organic, guided up twice, not cash-backed: H1 2026 operating cash flow was $2.3M against $31.7M a year earlier and reported free cash flow was negative $11.9M, as receivables absorbed $58.1M. - What the screen got wrong: four things. It added back a FY2024 impairment, so its $85.2M normalised EBIT and -20.4% EBIT growth are both wrong (FY2025 $82.7M against FY2024's $109.5M is -24.5%, or -18.5% excluding deal costs). It set artifact_flag false while the file's largest distortion, $34.3M of trailing deal costs, sits untouched in GAAP operating income. Its net debt of $59.2M uses long-term debt only, missing $868K of current maturities and the $34.0M IME purchase. And it prices a 30.7M-share standalone that has been under a signed agreement since 29 January 2026 to issue roughly 40% of itself.
1. What the business actually does
Gentherm makes the parts of a car that touch the occupant: heated and ventilated seats ($793M of FY2025 revenue), heated steering wheels and panels, pneumatic lumbar and massage systems built on shape-memory-alloy valves, seat electronics, and engine and brake valves. Automotive is 97% of revenue; a small Medical segment ($49.8M) sells patient warming and cooling systems (10-K, Item 1). It sells through seat makers rather than to carmakers: Lear is 16% and Adient 11% of product revenue, with Volkswagen and GM each 12% at the OEM level. 14,174 employees in 13 countries, with the Ukrainian plant at 5% of revenue.
2. Why it is mispriced — the edge case
There is no edge case, and that caps this note at WATCH. Gentherm is a liquid $1.2B Nasdaq name with $11.4M of daily volume, BlackRock at 15.1%, up 31.5% in six months and 16% below its 52-week high. Insiders own 2.1% and the only open-market trades in twelve months were two sales at $43.21, above today's price (Form 4s, 2026-07-30, 2026-08-18). Nobody is forced to sell. The one structural argument is that Reverse Morris Trust combinations go under-analysed until pro formas land, and the S-4 filed 2 July 2026 is not yet effective. That argues for waiting on a document, not for owning the stock before it.
3. Unit economics and growth
Gross margin is the tell: 25.2% in FY2024, 24.2% in FY2025, 23.2% in Q2 2026 against 23.9% a year earlier, driven by material costs and higher warranty accruals in both segments, partly offset by operating leverage (8-K 2026-07-23). Below the gross line the operating system is working: adjusted operating expenses grew 4.7% in Q2 on 11.0% revenue growth, and Adjusted EBITDA margin was 12.1% in H1 against 11.7%. Contracts carry annual price reductions as a structural feature (10-K, Item 1A), worth $11.4M in FY2025 and $6.1M in H1 2026. ROIC on the board's own three-year measurement was 9.29% (DEF 14A, awards note 3). Growth comes from Lumbar and Massage, up 37.8% in H1, and Climate and Comfort Electronics, up 31.5%, while Valve Systems and Other Automotive shrink. New business awards were $2.2B in 2025 and $690M in Q2, and a fourth consecutive quarter of new home-and-office customers supports the claim that the technologies scale beyond cars.
4. Balance sheet and capital allocation
A $550M revolver maturing 29 June 2031, $289.1M available, $502.3M total liquidity, in covenant compliance (10-Q Item 2). Share count is flat to up: 30,705,208 at 2026-06-30 against 30,526,231 at year-end, $10.0M repurchased in FY2025 at $26.24 and nothing in H1 2026. In July the board cancelled the old programme with $110.1M left and authorised $400M, 34% of the market cap. Compensation is tied to revenue growth, Adjusted EBITDA margin, ROIC and relative TSR, and the committee let the 2023 relative-revenue-growth and relative-TSR awards pay zero, which is evidence the metrics bite.
5. Management: what they said versus what they did
Bill Presley and Jon Douyard both arrived in January 2025, so there is one year of record. In April they held 2026 guidance at $1.5B to $1.6B revenue and $175M to $195M Adjusted EBITDA; in July they raised it to $1.55B to $1.65B and $185M to $200M, with Adjusted FCF $85M to $100M, explicitly excluding Modine. Against FY2025 Adjusted EBITDA of $174.8M that midpoint is +10%. The 14-point ex-FX outperformance against production, repeated in Q1 and Q2, is the hard evidence behind Presley's claim that the new operating system is "yielding positive results."
6. Valuation
Reverse DCF: at an EV of $1.271B and $73.4M of normalised after-tax operating profit the market pays 17.3x, so the current price implies Gentherm compounds that profit at about 3.2% a year in perpetuity at a 9% cost of capital, against S&P Global Mobility's forecast of a 2.6% decline in key-market light-vehicle production for 2026 (10-Q Item 2). All of that 3.2% must come from content per vehicle and new end markets. - Base (50%): 2027 revenue $1.66B, 12.5% Adjusted EBITDA margin = $208M, less $58M D&A and $15M stock compensation, taxed at 25% = $101M. At 15x, equity $1.43B, $46.40. - Bear (25%): production declines accelerate and price-downs outrun material savings; margin reverts to 11.0% on flat $1.60B revenue = $176M, normalised after-tax $77M at 11x, equity $756M, $24.60. - Bull (25%): Performance Technologies clears the accretion bar below, the combined company earns $370M Adjusted EBITDA, 7.5x on $2.78B EV less $344M net debt over 51.2M shares is $47.50, and the $400M authorisation used near these prices reaches $52. Probability-weighted $42.35, 10.5% above $38.33. The Modine arithmetic swings it and is checkable: 20.5M new shares at $38.33 is $785M plus the $210M SpinCo cash distribution, reconciling to the roughly $1,000M transaction value disclosed at signing (10-Q Item 2). Gentherm's own EV is 6.77x trailing Adjusted EBITDA, so $1.0B of consideration is only multiple-accretive if Performance Technologies contributes more than about $148M of Adjusted EBITDA. The bundle holds no Performance Technologies financials, so that test cannot be run from these documents.
7. Catalysts and timeline
S-4 effective and the definitive proxy mailed, the first public view of Performance Technologies' standalone and pro forma numbers. Shareholder vote on the issuance and the authorised-share increase (only 55,000,000 shares are authorised against the roughly 51.2M the deal needs). IRS ruling on the tax-free Distribution. Close targeted early Q4 2026, outside date 31 March 2027, extendable to 30 June 2027, $45M break fee. Q3 results in late October, the first quarter with ThermAffyx revenue.
8. Risks and pre-registered kill criteria
- Adjusted EBITDA margin below 11.5% for two consecutive quarters (11.7% in Q2 2026, 12.5% in Q1).
- The S-4 or proxy pro formas show Performance Technologies contributing less than $148M of trailing Adjusted EBITDA, making the $1.0B consideration dilutive to Gentherm's own 6.77x.
- Full-year 2026 Adjusted Free Cash Flow below the $85M guidance floor, or reported free cash flow negative for the full year (H1 2026 was negative $11.9M).
- Restructuring expense above $20M in FY2026 (FY2025 $12.5M, H1 2026 $12.7M), confirming restructuring is permanent and 17.3x is the generous read. Other risks: the Ukraine plant at 5% of revenue, Chinese competitors compressing industry pricing, and two seat makers at 27% of revenue.
9. Verdict and summary
WATCH, conviction 2. Gentherm is a better business than its screen row suggests and a worse value than it first looks. The screen called it 19.3x by adding back an impairment that belongs to FY2024 and ignoring $34.3M of trailing Modine and IME deal costs; clean up both and the real figure is 17.3x normalised after-tax operating profit, or 14.6x only if you pretend restructuring that has run $12M to $13M every year for three years will stop. That is not cheap for a Tier-2 auto supplier whose gross margin has fallen from 25.2% to 23.2% in two years, whose contracts build in annual price reductions, and whose H1 2026 free cash flow was negative $11.9M. What is genuinely good is the operating record of a management team barely eighteen months old: revenue up 9.5% ex-FX in Q2 against a production forecast of minus 2.6%, that outperformance repeated in two consecutive quarters, adjusted operating expenses up 4.7% on 11.0% revenue growth, guidance raised, net leverage at 0.3x, and a $400M repurchase authorisation worth a third of the market cap. It is a WATCH and not an IDEA because the price already implies 3.2% perpetual growth, there is no forced seller and no insider buying, and the fact that decides the outcome is unavailable: the Reverse Morris Trust that hands 40% of the company to Modine shareholders and adds a $250M term loan is only accretive if Performance Technologies earns more than roughly $148M of Adjusted EBITDA, and that number lives in an S-4 not yet declared effective. Probability-weighted value is about $42, 10% up. Revisit when the proxy lands with the pro formas.
Research for discussion, not investment advice. Positions and sizing are the reader's decision.