APH · Q4 2025 Earnings

Bullish

Amphenol

Reported January 28, 2026

30-second summary

30-second take: Amphenol closed Q4 at $6.44B revenue (+49% YoY, +37% organic), beating the high end of its own guide by $339M, with adjusted operating margin reaching a record 27.5% and book-to-bill hitting 1.31 on AI-driven IT Datacom bookings. Q1 FY2026 guidance of $6.90B–$7.00B (+43–45% YoY) includes ~$900M of CommScope CCS accretion that closed January, but the underlying organic story — IT Datacom growing 110% to 38% of sales, defense up 16% sequentially against mid-single-digit expectations — is what reset the baseline. Management explicitly anchored elevated organic growth as sustainable into 2026, dropping prior quarters' normalization hedging.

Headline numbers

EPS

Q4 FY2025

$0.97

Revenue

Q4 FY2025

$6.44B

+49.0% YoY

Gross margin

Q4 FY2025

38.2%

Free cash flow

Q4 FY2025

$1.48B

Operating margin

Q4 FY2025

26.8%

Key financials

Q4 FY2025

Metric	Q4 FY2025	YoY	Q3 FY2025	QoQ
Revenue	$6.44B	+49.0%	$6.19B	+4.0%
EPS	$0.97	—	$0.93	+4.3%
Gross margin	38.2%	—	38.1%	+10bps
Operating margin	26.8%	—	27.5%	-70bps
Free cash flow	$1.48B	—	$1.22B	+21.4%

Guidance

Amphenol delivered Q4 FY2025 and full-year results above prior guidance across revenue and EPS, and guided Q1 FY2026 at $6.90B–$7.00B revenue (+43–45% YoY) and $0.91–$0.93 EPS (+44–48% YoY), with material CommScope CCS accretion factored in.

Guidance is issued for both next quarter and the full year. Both may appear below.

Actuals vs prior guidance

Metric	Period	Prior guide	Actual	Δ	Result
Revenue	Q4 FY2025	$6.0B – $6.1B	$6.439B	+$0.339B above guide (5.6% above high end)	Beat
Adjusted Diluted EPS	Q4 FY2025	$0.89 – $0.91	$0.97	+$0.06 above guide (6.6% above high end)	Beat
Revenue	FY 2025	$22.66B – $22.76B	$23.0947B	+$0.335B above guide (1.5% above high end)	Beat
Adjusted Diluted EPS	FY 2025	$3.26 – $3.28	$3.34	+$0.06 above guide (1.8% above high end)	Beat

New guidance

Metric	Period	Guide	YoY
Revenue	Q1 FY2026	$6.90B – $7.00B	43% to 45%
Adjusted Diluted EPS	Q1 FY2026	$0.91 – $0.93	44% to 48%

Segment performance

Q4 FY2025

Segment	Q4 FY2025	YoY
Communications Solutions	$3.423B	+78.0%
Harsh Environment Solutions	$1.653B	+31.0%
Interconnect and Sensor Systems	$1.364B	+21.0%

Platform metrics

Q4 FY2025

Segment	Q4 FY2025
Organic Net Sales Growth (Q4)	37%
Organic Net Sales Growth (Full Year)	38%

Profitability

Q4 FY2025

Segment	Q4 FY2025
Communications Solutions Operating Margin (Q4)	32.5%
Harsh Environment Solutions Operating Margin (Q4)	27.6%
Interconnect and Sensor Systems Operating Margin (Q4)	20.1%
Adjusted Operating Margin (Q4)	27.5%
Adjusted Operating Margin (Full Year)	26.2%
Free Cash Flow Margin (Q4)	22.9%

Management tone

Q1 anchor: AI as growth driver → Q2 anchor: AI pull-forward → Q3 anchor: AI as structural operating model → Q4 anchor: Capacity expansion through M&A.

Four quarters ago AI was discussed as one driver among many; by Q2 it was a $150M pull-forward worth quantifying; in Q3 management reframed it as a "unique opportunity" requiring sustained investment; this quarter the framing has shifted again — AI demand is now treated as so structurally durable that management deployed its largest-ever acquisition ($4.1B CommScope CCS) explicitly to extend interconnect spectrum into fiber optics. Adam Norwitt's framing — "as our organization has evolved and scaled, so too has our ability to effectively manage a greater number of acquisitions of all sizes" — drops two decades of cautious M&A language. The shift signals management now views AI infrastructure as a multi-year capacity expansion problem, not a demand-capture problem.

The organic growth narrative completed its inversion this quarter. Three quarters ago management framed elevated growth as cyclical and guided to "modest moderation"; this quarter, Norwitt stated "on an organic basis, we're very pleased to anticipate that we will remain at these very elevated levels in the fourth quarter" heading into Q1. Prior calls leaned on "normalization" hedging that has now disappeared entirely. With FY 2025 organic growth of 38% on top of already-large Q4 2024 comparables, management is signaling the elevated base itself is the new baseline.

IT Datacom's repositioning is the cleanest tone shift in the print. Two quarters ago IT Datacom was 36% of sales; last quarter 37%; this quarter 38%, with 110% organic growth in Q4 and 124% for the full year. Norwitt's line — "robust bookings in the IT datacom market related to AI applications drove the record 1.31 book-to-bill" — explicitly anchors record orders to AI rather than to general datacom recovery. The book-to-bill of 1.31 (a Q1 leading indicator) is the most concrete forward signal in the call.

Defense outperformance hardened from a tone shift two quarters ago into measurable beat-and-raise momentum. Last quarter defense grew 29% YoY (+23% organic); this quarter sequential growth of 16% came in "well ahead of our expectations for mid-single-digit growth." Management's framing — "countries around the world are further expanding their investments into both current and next generation defense technologies" — escalates from geopolitical tailwind to broad-based program win disclosure. The watch item from Q2 has now been answered for three consecutive quarters.

Margin language has shifted from defending the structural reset to operationalizing it at the segment level. Q4 disclosed segment-specific operating margins for the first time in this cadence — Communications Solutions at 32.5%, Harsh Environment at 27.6%, Interconnect & Sensor at 20.1% — alongside an explicit 30% conversion margin target for organic incremental sales in 2026. Management acknowledged ~100bps of Q1 margin headwind from CCS's seasonally weak Q1 but committed to bringing CCS to company-average margins over time. This is operating language, not aspirational language.

Recurring themes management leaned on this quarter:

AI-driven data center demand as primary growth catalystRecord operating margins (27.5% adjusted Q4, 26.2% FY) driven by operating leverageAggressive M&A strategy with confidence in integration and near-term EPS accretionIT Datacom market dominance (38% of sales, 110% organic growth)Diversified end-market exposure mitigating concentration riskRecord cash generation ($5.4B operating CF, $4.4B free CF) underpinning capital allocation

Risks management surfaced:

China tax authorities challenging historical tax decisions (8-year lookback, $100M accrual)Geopolitical uncertainty (referenced but positioned as tailwind, not risk)Mobile devices market moderation (4% decline Q4, anticipated 30% seasonal decline Q1)Automotive market seasonal volatility (10% expected sequential decline Q1)Integration execution risk from largest-ever acquisition (CommScope)

Q&A highlights

William Stein · Truist Securities

Asked about the 1.31 book-to-bill ratio and whether extended duration orders are concentrated in IT Datacom. Inquired whether orders are driven by lead time considerations or minimum order requirements to meet CapEx.

Management explained that strong bookings across all end markets were driven primarily by AI investments in IT Datacom. Orders reflect customer confidence and commitment, not lead times. Customers are sharing investment risk through commitments that justify Amphenol's capital spending and team investment.

Book-to-bill ratio of 1.31Record orders of $8+ billion in quarter124% year-over-year growth in IT Datacom for full yearOrders driven by customer investment plans and risk-sharing arrangements

Amit Daryanani · Evercore ISI

Asked about breadth of offerings post-CCS acquisition, particularly addressing perception that Amphenol is copper-focused and risks losing share as markets move to optics and fiber.

Management highlighted that CCS acquisition vaults Amphenol into fiber optic leadership, complementing existing copper interconnect strength from TCS acquisition 20 years ago. Now positioned to offer complete interconnect spectrum across copper and fiber, enabling comprehensive customer solutions.

20-year anniversary of TCS acquisition catapulting Amphenol into copper interconnect leadershipCCS provides expansion into fiber optic interconnect breadth and depthCan now serve data centers and communications networks across full interconnect spectrumPositions Amphenol as partner across multiple generations of customer products

Wamsi Mohan · Bank of America

Asked for breakdown of flat organic Q1 IT Datacom guidance excluding CCS, specifically whether traditional enterprise markets will decline while AI workloads grow. Requested color on AI customer trajectory and whether growth is new programs or expanded units in existing programs.

Management explained flat guidance reflects typical seasonal Q1 decline in base business offset by AI strength. Emphasized breadth of AI exposure across entire stack—from web-scale companies to chip designers—with no 10% customer concentration. Highlighted customer investment plans increasing and technology upgrades requiring more complex interconnect. CommScope now participating in broader fiber optic data center opportunity.

No 10% customers in 2025Significant breadth across AI customer baseCustomer investment plans continuing to increaseTechnology upgrades requiring higher complexity interconnect

Mark Delaney · Goldman Sachs

Asked about margin outlook given record 27.5% EBIT margin in Q4, metals cost increases, and integration of large CCS deal. Requested guidance on incremental margins for 2026.

Management stated metals are immaterial to overall margins despite recent increases; general managers offset costs through design, manufacturing, and vendor management. Q1 sequential decline is normal seasonality, with CCS contributing ~100 basis point margin headwind due to seasonal Q1 weakness. Expect 30% conversion margins on organic incremental sales; CCS targeted to reach company average over time.

Record operating margin of 27.5% in Q4 2025Metals have immaterial impact on margin outlookMid-to-lower 30s conversion on organic sales in Q1CCS margins below high-teen rate in Q1 due to seasonality (100 bps impact)

Answers to last quarter's watch list

Whether Q4 revenue lands above $6.10B — Yes, by a wide margin. Q4 revenue of $6.44B beat the high end of the guide by $339M (+5.6%), pushing FY 2025 revenue to $23.09B. The beat magnitude moderated from Q3's +12.6% to Q4's +5.6% — internal forecast accuracy is tightening, but the print still demolished the guide.

Resolved positively

IT Datacom share of total sales at 37%+ with Communications Solutions organic growth above 60% — Both held. IT Datacom rose to 38% of Q4 sales (124% organic for the full year), and Communications Solutions delivered +78% YoY reported growth in Q4 with the segment now generating 32.5% operating margin. AI infrastructure remains in expansion phase, not digestion.

Resolved positively

Adjusted operating margin holding above 27% — Yes, at the guided level. Q4 adjusted operating margin came in at 27.5%, matching Q3's record and confirming the 30% incremental conversion math holds even as revenue stepped up sequentially. Management has now committed to a 30% conversion target for 2026 organic incremental sales.

Resolved positively

Whether FY 2026 framework gets previewed on Q4 call — Partially. Management disclosed CCS contribution of ~$4.1B FY2026 revenue and ~$0.15 EPS accretion, plus a 30% organic conversion margin target, but did not issue a formal consolidated FY 2026 revenue or EPS guide. The base growth rate above 10% organic implied by Q1 guidance is encouraging but not formalized.

Continue monitoring

Defense organic growth holding above 20% — Defense delivered sequential growth of 16% against an expected mid-single-digit baseline, with the company citing broad-based geopolitical investment expansion. The full-year YoY organic figure was not explicitly disclosed in the extraction, but the sequential outperformance and Q&A commentary suggest the 20%+ organic trajectory held.

Resolved positively

What to watch into next quarter

Whether Q1 FY2026 organic revenue ex-CCS lands above $6.10B — implied organic guide midpoint is roughly $6.05B (Q1 guide $6.95B midpoint minus $900M CCS). A beat to $6.10B+ would confirm the "elevated levels sustained" narrative and continue the three-quarter pattern of materially exceeding internal forecasts; a print at or below the midpoint would be the first real sign that organic momentum is normalizing.

CCS Q1 operating margin disclosure — management guided CCS Q1 margins to below "high-teens" with ~100bps consolidated dilution. Watch whether actual CCS Q1 margin lands at the high-teens or low-teens level, and whether management quantifies the path to company-average margins (~27%) by quarter.

Book-to-bill ratio in Q1 — Q4 hit a record 1.31 on AI-driven IT Datacom bookings. Sustaining above 1.10 in Q1 (seasonally weaker book quarter) would validate the durability of the AI order book; a drop to 1.00 or below on a sequentially smaller revenue base would suggest Q4 bookings included lead-time elongation despite management's denial.

IT Datacom as a percentage of total sales above 38% — sustaining above 38% on a CCS-inclusive revenue base of ~$6.95B implies IT Datacom + CCS together exceeding ~$2.65B in Q1. A drop below 36% on the consolidated base would suggest CCS is dilutive to mix and that organic IT Datacom is decelerating off the Q4 peak.

Formal FY 2026 guidance issuance on Q1 call — Amphenol's cadence is to issue FY guidance one quarter into the fiscal year. Watch whether the Q1 print includes a consolidated FY 2026 revenue and EPS guide, and specifically whether the implied organic growth rate anchors above 10% given the IT Datacom and defense carryover.

Sources

Amphenol Q4 2025 press release, filed via SEC EDGAR: https://www.sec.gov/Archives/edgar/data/820313/000110465926007259/aph-20260128xex99d1.htm
Amphenol Q4 2025 earnings call commentary (analyst Q&A and prepared remarks, as extracted)
Tapebrief Q3 2025 and Q2 2025 APH briefs, for cross-quarter trend and watch-list context

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