AMPHENOL CORP /DE/
APH · Electronic Connectors · 1.23B shares · +19%/yr ↑ shares · EDGAR filings ↗
Net buyback after stock comp: $486M (gross $585M, SBC $99M)
Reference price $143.21 · est. market cap ~$176.2B — last insider sale, 2026-05-05 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
A88Elite interconnect compounder with strong margins, top-tier returns, and explosive AI/datacom-driven growth and free cash flow.
Strengths
- Elite returns and margins — operating margin 25.4% (89th), ROE 31.8% (84th), net margin 18.5% (82nd)
- Explosive growth and FCF — revenue +51.7% (85th), net income +76.2% (80th), FCF $4.38B (96th)
- Strong liquidity — current ratio 2.98 (73rd)
Risks
- Acquisition-driven growth and integration risk — qualitative (per 10-K)
- International/geopolitical, export-control, and government-contract exposure per risk factors — qualitative (per 10-K)
- End-market cyclicality — qualitative (per 10-K)
Notable findings
- High convictionHigh conviction — notable institutional holders, insider buying, and a strong balance sheet
- Exec changeRecent 8-K item 5.02 8-K ↗
- Fund exitedNotable fund(s) exited this quarter: VANGUARD GROUP INC
- Strong balance sheetStrong balance sheet — $11.4B cash & investments
- Insider buyingInsider buying — 1 open-market buy(s) by 1 insider(s) (~$1M, last 6mo) Form 4 ↗
- AccumulatingInstitutional holders rose 27→31 QoQ (2025-12-31→2026-03-31)
- New fund positionNotable fund(s) opened this quarter: RENAISSANCE TECHNOLOGIES LLC
- Insider sellingInsider selling — 7 open-market sale(s) by 3 insider(s) (cluster of 3 insiders, ~$131M, last 6mo) Form 4 ↗
- Notable holderHeld by 6 notable fund(s): FMR LLC, STATE STREET CORP, GOLDMAN SACHS GROUP INC +3 more (as of 2026-03-31)
Quarterly revenue
Last 4 quarters · from SEC filings.
Key metrics
Return on equity
31.8%
Return on assets
11.8%
Revenue growth (QoQ)
23.0%
Net-income growth
76.2%
Current ratio
3.0×
Free cash flow
$4.4B
EBITDA
$6.8B
Tangible book value
$596M
Cash & investments
$11.4B
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-05-22 | Wolff Anne Clarke | Grant | 1.6K | — |
| 2026-05-22 | Singh Prahlad R. | Grant | 1.6K | — |
| 2026-05-22 | Livingston Robert | Grant | 1.6K | — |
| 2026-05-22 | Lane Rita S. | Grant | 1.6K | — |
| 2026-05-22 | Lamba Sanjiv | Grant | 1.6K | — |
| 2026-05-22 | Falck David P | Grant | 1.6K | — |
| 2026-05-22 | Altobello Nancy A. | Grant | 1.6K | — |
| 2026-05-20 | Lampo Craig A | Other | 41K | — |
| 2026-05-05 | NORWITT RICHARD ADAM | Option exercise | 18K | $22.37 |
| 2026-05-05 | NORWITT RICHARD ADAM | Sell | 18K | $143.21 |
| 2026-05-04 | NORWITT RICHARD ADAM | Option exercise | 52K | $22.37 |
| 2026-05-04 | NORWITT RICHARD ADAM | Sell | 52K | $142.04 |
| 2026-05-01 | NORWITT RICHARD ADAM | Option exercise | 61K | $22.37 |
| 2026-05-01 | NORWITT RICHARD ADAM | Sell | 61K | $143.90 |
| 2026-02-18 | Lampo Craig A | Sell | 100K | $149.98 |
| 2026-02-18 | Lampo Craig A | Option exercise | 100K | $22.00 |
| 2026-02-18 | D'AMICO LANCE E | Option exercise | 50K | $22.55 |
| 2026-02-18 | D'AMICO LANCE E | Sell | 50K | $149.88 |
| 2026-02-12 | NORWITT RICHARD ADAM | Option exercise | 515K | $22.37 |
| 2026-02-12 | NORWITT RICHARD ADAM | Sell | 515K | $147.27 |
| 2026-02-12 | NORWITT RICHARD ADAM | Option exercise | 93K | $22.37 |
| 2026-02-12 | NORWITT RICHARD ADAM | Sell | 93K | $147.17 |
| 2026-02-05 | Livingston Robert | Buy | 10K | $128.51 |
| 2026-02-04 | Ivas Michael R. | Option exercise | 25K | $22.37 |
| 2026-02-04 | Ivas Michael R. | Gift | 25K | — |
| 2026-02-04 | Ivas Michael R. | Gift | 25K | — |
| 2026-01-29 | Ivas Michael R. | Gift | 2.5K | — |
| 2026-01-08 | Lamba Sanjiv | Grant | 548 | $136.25 |
| 2025-12-10 | LOEFFLER MARTIN H | Gift | 3.2K | — |
| 2025-12-09 | NORWITT RICHARD ADAM | Gift | 75K | — |
| 2025-12-03 | Lampo Craig A | Gift | 70K | — |
| 2025-12-03 | Lampo Craig A | Gift | 70K | — |
| 2025-12-02 | Straub Peter | Option exercise | 132K | $22.55 |
| 2025-12-02 | Straub Peter | Sell | 132K | $141.84 |
| 2025-12-02 | Doherty William J | Option exercise | 80K | $33.30 |
| 2025-12-02 | Doherty William J | Sell | 80K | $142.00 |
| 2025-11-26 | Lampo Craig A | Gift | 40K | — |
| 2025-11-11 | Lampo Craig A | Option exercise | 300K | $22.00 |
| 2025-11-11 | Lampo Craig A | Sell | 258K | $143.20 |
| 2025-11-11 | Lampo Craig A | Option exercise | 40K | $22.00 |
| 2025-11-11 | Lampo Craig A | Sell | 40K | $143.50 |
| 2025-11-05 | Ivas Michael R. | Option exercise | 120K | $22.00 |
| 2025-11-05 | Ivas Michael R. | Sell | 120K | $140.05 |
| 2025-11-03 | Silverman David M | Option exercise | 120K | $22.00 |
| 2025-11-03 | Silverman David M | Sell | 120K | $141.17 |
| 2025-10-31 | Ivas Michael R. | Option exercise | 120K | $22.00 |
| 2025-10-31 | Ivas Michael R. | Sell | 120K | $141.30 |
| 2025-10-29 | Doherty William J | Option exercise | 80K | $33.30 |
| 2025-10-29 | Doherty William J | Sell | 80K | $141.04 |
| 2025-10-29 | D'AMICO LANCE E | Option exercise | 120K | $22.55 |
| 2025-10-29 | D'AMICO LANCE E | Sell | 120K | $140.01 |
| 2025-10-28 | NORWITT RICHARD ADAM | Option exercise | 75K | $22.37 |
| 2025-10-28 | NORWITT RICHARD ADAM | Gift | 75K | — |
| 2025-10-24 | WALTER LUC | Sell | 213K | $134.65 |
| 2025-10-24 | WALTER LUC | Option exercise | 152K | $43.25 |
| 2025-10-24 | WALTER LUC | Sell | 152K | $134.65 |
| 2025-10-24 | WALTER LUC | Gift | 80K | — |
| 2025-10-24 | WALTER LUC | Option exercise | 213K | $33.30 |
| 2025-09-08 | Straub Peter | Option exercise | 44K | $22.37 |
| 2025-09-08 | Straub Peter | Sell | 44K | $110.64 |
| 2025-09-08 | Straub Peter | Option exercise | 44K | $22.55 |
| 2025-09-08 | Straub Peter | Sell | 44K | $110.64 |
| 2025-08-29 | WALTER LUC | Gift | 18K | — |
| 2025-08-25 | Silverman David M | Option exercise | 100K | $18.23 |
| 2025-08-25 | Silverman David M | Sell | 100K | $110.42 |
| 2025-08-25 | Lampo Craig A | Option exercise | 40K | $22.00 |
| 2025-08-25 | Lampo Craig A | Sell | 40K | $110.56 |
| 2025-08-22 | Lampo Craig A | Sell | 200K | $110.43 |
| 2025-08-22 | Lampo Craig A | Option exercise | 200K | $22.00 |
| 2025-08-18 | D'AMICO LANCE E | Sell | 100K | $110.60 |
| 2025-08-18 | D'AMICO LANCE E | Sell | 30K | $110.81 |
| 2025-08-18 | D'AMICO LANCE E | Option exercise | 30K | $22.37 |
| 2025-08-18 | D'AMICO LANCE E | Option exercise | 100K | $22.55 |
| 2025-08-11 | Doherty William J | Option exercise | 113K | $22.55 |
| 2025-08-11 | Doherty William J | Sell | 113K | $110.29 |
| 2025-08-08 | Doherty William J | Sell | 113K | $108.89 |
| 2025-08-08 | Doherty William J | Option exercise | 113K | $22.55 |
| 2025-08-08 | Ivas Michael R. | Option exercise | 50K | $18.23 |
| 2025-08-08 | Ivas Michael R. | Sell | 50K | $110.02 |
| 2025-06-03 | WALTER LUC | Option exercise | 286K | $22.55 |
| 2025-06-03 | WALTER LUC | Sell | 286K | $91.43 |
| 2025-05-30 | Doherty William J | Option exercise | 160K | $22.55 |
| 2025-05-30 | Doherty William J | Sell | 160K | $89.54 |
| 2025-05-30 | Silverman David M | Option exercise | 100K | $18.23 |
| 2025-05-30 | Silverman David M | Sell | 100K | $89.09 |
| 2025-05-29 | Ivas Michael R. | Option exercise | 40K | $18.23 |
| 2025-05-29 | Ivas Michael R. | Sell | 40K | $88.79 |
| 2025-05-16 | Livingston Robert | Grant | 2.4K | — |
| 2025-05-16 | Falck David P | Grant | 2.4K | — |
| 2025-05-16 | Altobello Nancy A. | Grant | 2.4K | — |
| 2025-05-16 | Wolff Anne Clarke | Grant | 2.4K | — |
| 2025-05-16 | Singh Prahlad R. | Grant | 2.4K | — |
| 2025-05-16 | LOEFFLER MARTIN H | Grant | 2.4K | — |
| 2025-05-16 | Lane Rita S. | Grant | 2.4K | — |
| 2025-05-13 | D'AMICO LANCE E | Option exercise | 125K | $22.37 |
| 2025-05-13 | D'AMICO LANCE E | Sell | 100K | $86.36 |
| 2025-05-02 | Doherty William J | Option exercise | 36K | $22.37 |
| 2025-05-02 | Doherty William J | Sell | 36K | $80.28 |
| 2025-05-02 | Doherty William J | Option exercise | 90K | $22.55 |
| 2025-05-02 | Doherty William J | Sell | 90K | $80.28 |
| 2025-05-02 | Silverman David M | Option exercise | 100K | $18.23 |
| 2025-05-02 | Silverman David M | Sell | 88K | $80.03 |
| 2025-04-25 | WALTER LUC | Option exercise | 190K | $22.55 |
| 2025-04-25 | WALTER LUC | Sell | 190K | $75.91 |
| 2025-04-25 | WALTER LUC | Option exercise | 200K | $22.37 |
| 2025-04-25 | WALTER LUC | Sell | 200K | $75.91 |
| 2025-04-25 | WALTER LUC | Option exercise | 50K | $22.00 |
| 2025-04-25 | WALTER LUC | Gift | 46K | — |
| 2025-04-25 | Doherty William J | Option exercise | 100K | $22.37 |
| 2025-04-25 | Doherty William J | Sell | 100K | $75.49 |
| 2025-04-25 | D'AMICO LANCE E | Option exercise | 175K | $22.37 |
| 2025-04-25 | D'AMICO LANCE E | Sell | 175K | $76.28 |
| 2025-04-25 | D'AMICO LANCE E | Option exercise | 30K | $22.37 |
| 2025-04-25 | D'AMICO LANCE E | Sell | 30K | $76.22 |
| 2025-04-25 | Silverman David M | Option exercise | 100K | $18.23 |
| 2025-04-25 | Silverman David M | Sell | 100K | $75.88 |
| 2025-04-25 | NORWITT RICHARD ADAM | Option exercise | 2.0M | $22.00 |
| 2025-04-25 | NORWITT RICHARD ADAM | Sell | 2.0M | $75.73 |
| 2025-04-25 | Lampo Craig A | Option exercise | 400K | $18.23 |
| 2025-04-25 | Lampo Craig A | Sell | 400K | $75.93 |
| 2025-01-28 | Silverman David M | Gift | 14K | — |
| 2025-01-28 | Silverman David M | Gift | 14K | — |
| 2025-01-28 | Lampo Craig A | Gift | 58K | — |
| 2025-01-28 | Lampo Craig A | Gift | 58K | — |
| 2025-01-28 | D'AMICO LANCE E | Gift | 25K | — |
| 2025-01-28 | D'AMICO LANCE E | Gift | 25K | — |
All non-derivative Form 4 activity (SEC), newest first.
Notable events (8-K)
| Date | Items | |
|---|---|---|
| 2026-05-22 | Shareholder voteExhibits | filing ↗ |
| 2026-05-12 | Material agreementDebt obligationExhibits | filing ↗ |
| 2026-05-06 | Material agreementOtherExhibits | filing ↗ |
| 2026-04-29 | ResultsExhibits | filing ↗ |
| 2026-03-30 | Material agreementDebt obligationExhibits | filing ↗ |
| 2026-03-27 | Reg FDExhibits | filing ↗ |
| 2026-03-24 | Material agreementOtherExhibits | filing ↗ |
| 2026-02-05 | Exec/director changeReg FDExhibits | filing ↗ |
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-05-22 | 2026-05-21 | 0001104659-26-065682 ↗ |
| 8-K | 2026-05-12 | 2026-05-12 | 0001104659-26-059404 ↗ |
| 8-K | 2026-05-06 | 2026-05-05 | 0001104659-26-055888 ↗ |
| 10-Q | 2026-05-01 | 2026-03-31 | 0001104659-26-054128 ↗ |
| 8-K | 2026-04-29 | 2026-04-29 | 0001104659-26-050984 ↗ |
| 8-K | 2026-03-30 | 2026-03-30 | 0001104659-26-036361 ↗ |
| 8-K/A | 2026-03-27 | 2026-01-09 | 0001104659-26-036173 ↗ |
| 8-K | 2026-03-24 | 2026-03-24 | 0001104659-26-033968 ↗ |
| 10-K | 2026-02-11 | 2025-12-31 | 0001104659-26-013549 ↗ |
| 8-K | 2026-02-05 | 2026-02-04 | 0001104659-26-010676 ↗ |
| 8-K | 2026-01-28 | 2026-01-28 | 0001104659-26-007259 ↗ |
| 8-K | 2026-01-12 | 2026-01-09 | 0001104659-26-002737 ↗ |