Amphenol
Connectors, sensors, antennas, and cable engineered for communications, transportation, industry, and aerospace.
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Breakdown13F · Form 4
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 1.23B · Float 1.23B · 99.4% free float
A split settled after this quarter ended and restating the quarter by it contradicts the provider's own figure, so the quarter is served as filed.
Institutions13F, as of Jun 30, 2026
2,389 holders · 1.51B shares · 375 new positions · 1,350 increased · 788 reduced · 175 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 101.25M | 8.21% | −714.0K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 80.35M | 6.52% | +471.8K | Aug 13, 2026 |
| FMR LLC | 70.57M | 5.72% | −8.91M | Aug 13, 2026 |
| State Street Corp | 59.49M | 4.83% | +2.10M | Aug 7, 2026 |
| Capital International Investors | 43.04M | 3.49% | +7.70M | Aug 12, 2026 |
| JPMorgan Chase & Co | 39.20M | 3.18% | −10.07M | Aug 12, 2026 |
| Vanguard Portfolio Management LLC | 35.69M | 2.89% | −161.4K | Aug 13, 2026 |
| Price T Rowe Associates Inc /MD/ | 32.01M | 2.60% | +5.82M | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Vanguard Capital Management | 7.47% | 13G | Apr 29, 2026 ↗ | |
| FMR LLC | 7.10% | 13G | Feb 5, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Richard Adam Norwitt | director, officer: President & CEO | 2.79M | 0.23% | Aug 3, 2026 |
| Martin H. Loeffler | director | 1.33M | 0.11% | Dec 11, 2025 |
| Luc Walter | officer: President, HES Division | 353.7K | 0.03% | Oct 27, 2025 |
| Michael R. Ivas | officer: VP & Corporate Controller | 179.9K | 0.01% | Feb 5, 2026 |
| Robert Livingston | director | 135.7K | 0.01% | Feb 6, 2026 |
| Lance E. D'Amico | officer: See Remarks | 133.5K | 0.01% | Feb 19, 2026 |
| Craig A. Lampo | officer: EVP& CFO | 90.7K | 0.01% | Aug 6, 2026 |
| David M. Silverman | officer: EVP, Human Resources | 29.7K | 0.00% | Aug 5, 2026 |
15 ten-percent owners hold 57.16M shares by Form 4, outside the officers-and-directors figure above · 23 people have not refiled in the last 18 months (11.38M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 3, 2026 | Lance E. D'Amicoofficer: EVP, Secretary & GenCounsel | Sale · 2 lots | 60,000 | $161.96 | 57,065 |
| Aug 4, 2026 | Craig A. Lampoofficer: EVP& CFO | Sale | 193,200 | $167.31 | 90,665 |
| Aug 5, 2026 | David M. Silvermanofficer: EVP, Human Resources | Sale | 120,000 | $174.24 | 15,672 |
| Jul 31, 2026 | Richard Adam Norwittdirector, officer: President & CEO | Sale · 2 lots | 686,104 | $161.76 | 2,791,684 |
| May 4, 2026 | Richard Adam Norwittdirector, officer: President & CEO | Sale | 52,203 | $142.04 | 1,927,507 |
| May 1, 2026 | Richard Adam Norwittdirector, officer: President & CEO | Sale | 61,072 | $143.90 | 1,927,507 |
| May 5, 2026 | Richard Adam Norwittdirector, officer: President & CEO | Sale | 17,500 | $143.21 | 1,927,507 |
| Feb 18, 2026 | Lance E. D'Amicoofficer: See Remarks | Sale | 50,000 | $149.88 | 57,065 |
| Feb 18, 2026 | Craig A. Lampoofficer: Executive VP & CFO | Sale | 100,000 | $149.98 | 112,110 |
| Feb 12, 2026 | Richard Adam Norwittdirector, officer: President & CEO | Sale · 2 lots | 608,333 | $147.25 | 2,791,684 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Dan Newhouse · WA04 | Purchase | $1,001 – $15,000 | Spouse | Jul 10, 2026 | Jul 20, 2026 ↗ |
| Rep. Rick Larsen · WA02 | Purchase | $1,001 – $15,000 | Jul 8, 2026 | Jul 13, 2026 ↗ |