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Call sheet · Q4'25

Coherent (COHR)

Q4'25 earnings call · held August 13, 2025 · compared with the Q3'25 call · management-credibility review
6/12
Disclosure score
4 medium, 3 low flags
Financial quality
Bottom line
The 6-inch indium phosphide platform launching in August could be the real competitive moat while everyone obsesses over 1.6T timing. Management's sequential datacom deceleration from 11% to 3% growth, despite starting 1.6T shipments, suggests the transition is messier than expected. The binding constraint isn't demand, it's execution on multiple product transitions simultaneously while maintaining 800G volumes. Anderson admitted 'sequential growth rates can fluctuate quarter-to-quarter based on lumpiness' - classic excuse-setting language. My view changes if they quantify 1.6T revenue contribution and restore FCF disclosure next quarter.

The 30-second version

  • The A&D divestiture is hiding the real story: sequential datacom deceleration as 1.6T fails to ramp
  • 6-inch indium phosphide is the sleeper competitive moat everyone's ignoring
  • Industrial caution reveals management doesn't trust their own diversification story

What changed this quarter

MetricQ3'25Q4'25Change
Revenue$1.50B (+24% YoY)$1.53B (+16% YoY)Deceleration in YoY growth momentum
Non-GAAP EPS$0.91 (+139% YoY)$1.00 (+96% YoY)YoY growth rate cut in half
Non-GAAP Gross Margin38.5% (+490 bps YoY)38.1% (+220 bps YoY)43 bps sequential decline, YoY improvement halved
Datacom+Comms Revenue9% sequential, 46% YoY5% sequential, 39% YoYSequential growth rate halved
Datacom Revenue11% sequential, 54% YoY3% sequential, 38% YoYSequential momentum stalling
Communications Revenue2% sequential, 21% YoY11% sequential, 42% YoYAcceleration in DCI demand
Industrial Revenue-2% sequential, +1% YoY-2% sequential, -8% YoYYoY turned negative
Free Cash FlowNot disclosedNot disclosedStill no FCF disclosure
Debt Paydown$136M in quarter$51M in quarter62% reduction in paydown pace
Non-GAAP Operating Margin18.6%18.0%60 bps sequential decline

Accountability tracked

8 new promises made5 narrative shifts flagged7 prior promises scored
Inside the full report
The complete write-up covers the full promise ledger with kept/missed calls, disclosure-quality scoring, the metrics-vanished check, verification items, and the questions to ask next quarter.
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Scores, kept-promise rates, and flags on this site reflect the author's opinion, applying a stated methodology to statements management made on public earnings calls. Informational and educational purposes only - not investment advice, a recommendation, or an offer to buy or sell any security. Sources believed reliable but not guaranteed; the author may hold positions in the securities discussed.

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