Amphenol Corporation
Ownership
Ownership Structure
Who owns Amphenol Corporation (APH)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.3% of the shares are freely tradable; institutional investors hold 97.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 4.13 | 101,966,066 | -3.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.24 | 79,875,456 | +0.0 | 03/31/2026 |
| FMR Inc | 3.22 | 79,477,521 | -8.0 | 03/31/2026 |
| State Street Corp | 2.33 | 57,396,418 | +0.8 | 03/31/2026 |
| JPMorgan Chase & Co | 2.00 | 49,270,578 | +43.5 | 03/31/2026 |
| Capital Research & Mgmt Co - Division 3 | 1.75 | 43,036,258 | +21.8 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 1.45 | 35,850,171 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 1.27 | 31,295,967 | +3.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 1.59 | 39,174,559 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 1.31 | 32,295,656 | +1.1 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Norwitt Richard Adam | President & CEO | 5,583,368 | 437,736,051 $ | Jul 31, 2026 | both |
| Lampo Craig A | EVP& CFO | 181,330 | 14,216,272 $ | Aug 4, 2026 | both |
| D'amico Lance E | EVP, Secretary & GenCounsel | 114,130 | 8,947,792 $ | Aug 3, 2026 | both |
| Silverman David M | EVP, Human Resources | 31,344 | 2,457,370 $ | Aug 5, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 6, 2026 | Lampo Craig A | EVP& CFO | Other | 54,547 | 0.00 | – |
| Aug 5, 2026 | Silverman David M | EVP, Human Resources | Sell | 120,000 | 174.24 | 20,908,476 |
| Aug 5, 2026 | Silverman David M | EVP, Human Resources | Other | 120,000 | 22.00 | 2,639,400 |
| Aug 4, 2026 | Lampo Craig A | EVP& CFO | Sell | 193,200 | 167.31 | 32,324,157 |
| Aug 4, 2026 | Lampo Craig A | EVP& CFO | Other | 193,200 | 22.37 | 4,322,367 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Sell | 10,000 | 161.82 | 1,618,175 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Other | 10,000 | 22.55 | 225,525 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Sell | 40,000 | 161.82 | 6,472,700 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Other | 40,000 | 22.37 | 894,900 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Sell | 50,000 | 161.99 | 8,099,370 |
| Aug 3, 2026 | D'amico Lance E | EVP, Secretary & GenCounsel | Other | 50,000 | 22.55 | 1,127,625 |
| Jul 31, 2026 | Norwitt Richard Adam | President & CEO | Sell | 186,104 | 162.27 | 30,199,319 |
| Jul 31, 2026 | Norwitt Richard Adam | President & CEO | Other | 186,104 | 22.37 | 4,163,612 |
| Jul 31, 2026 | Norwitt Richard Adam | President & CEO | Sell | 500,000 | 161.57 | 80,787,400 |
| Jul 31, 2026 | Norwitt Richard Adam | President & CEO | Other | 500,000 | 22.37 | 11,186,250 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.