NYSE · Technology · Holders
Amphenol Corp. (APH) Institutional Ownership & Insider Trading History
Top APH institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
- Last confirmed price
- $79.20-0.15%
- Oct 21, 2026, 4:00 PM EDT · Prices may be delayed
Data dates
Prices as of Oct 21, 4:00 PM EDT · Fundamentals checked Oct 22, 2:30 AM EDT · Statement period ended Jun 30, 2026
Ownership read
APH insider transaction activity: Mixed, sale-heavy.
Blackrock Inc. is the largest institutional holder. 44 classified sales and 1 classified purchase appear in the recent insider records. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
APH
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
202.50M
Blackrock Inc.
Insider transaction activity
Mixed, sale-heavy
$1.08B sold / $1.29M bought
Observations shown
120
10 holder / 110 insider
- Increased / initiated
- Unavailable
- Prior positions were not supplied
- Insider rows
- 110
- Transaction dates shown per row
Ownership concentration and transaction activity
- Top 10 reported holders
- 84.69% outstanding
- Changes with share-count history
- Prior-position data unavailable
- New / exited positions
- Prior-position data unavailable
- Largest increase with share-count history
- Prior share counts unavailable
These changes cover the holders shown. A holder missing from this list may still own shares. Compare positions from the same reporting quarters.
Net shares sold: 10,519,030
Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.
- Gift: 14
- Conversion / exercise: 46
- Purchase / sale; plan unknown: 45
- Grant: 5
Top 10 institutional holders
Amphenol Corp. (APH) institutional ownership
Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.
| # | Institution | % held | Shares | Position / filing date |
|---|---|---|---|---|
| 1 | 16.4% | 202.50M | Position as of Jun 30, 2026Filing date unknown | |
| 2 | 13.0% | 160.69M | Position as of Jun 30, 2026Filing date unknown | |
| 3 | 11.5% | 141.14M | Position as of Jun 30, 2026Filing date unknown | |
| 4 | 9.65% | 118.99M | Position as of Jun 30, 2026Filing date unknown | |
| 5 | Capital International Investors | 6.98% | 86.07M | Position as of Jun 30, 2026Filing date unknown |
| 6 | 6.36% | 78.40M | Position as of Jun 30, 2026Filing date unknown | |
| 7 | 5.79% | 71.38M | Position as of Jun 30, 2026Filing date unknown | |
| 8 | 5.19% | 64.02M | Position as of Jun 30, 2026Filing date unknown | |
| 9 | 5.04% | 62.14M | Position as of Jun 30, 2026Filing date unknown | |
| 10 | 4.78% | 58.98M | Position as of Jun 30, 2026Filing date unknown |
Recent insider transactions
Amphenol Corp. (APH) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding. Window: Oct 29, 2024–Aug 6, 2026 · 110 records.
| # | Insider | % company | Action | Shares | Price | Value | Transaction / filing |
|---|---|---|---|---|---|---|---|
| 1 | LAMPO CRAIG A Chief Financial Officer | <0.01% | GiftGift transfer. Usually non-cash and not an open-market sale.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 54.55K | Non-cash | Non-cash | Aug 6, 2026Filing date unavailableOriginal filing link unavailable |
| 2 | SILVERMAN DAVID M Officer | <0.01% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 120.00K | $22.00 | $2,639,400 | Aug 5, 2026Filing date unavailableOriginal filing link unavailable |
| 3 | SILVERMAN DAVID M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 120.00K | $174.24 | $20,908,476 | Aug 5, 2026Filing date unavailableOriginal filing link unavailable |
| 4 | LAMPO CRAIG A Chief Financial Officer | 0.02% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 193.20K | $22.37 | $4,322,367 | Aug 4, 2026Filing date unavailableOriginal filing link unavailable |
| 5 | LAMPO CRAIG A Chief Financial Officer | 0.02% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 193.20K | $167.31 | $32,324,157 | Aug 4, 2026Filing date unavailableOriginal filing link unavailable |
| 6 | D'AMICO LANCE E General Counsel | <0.01% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 100.00K | $22.48 | $2,248,050 | Aug 3, 2026Filing date unavailableOriginal filing link unavailable |
| 7 | D'AMICO LANCE E General Counsel | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 100.00K | $161.90 | $16,190,245 | Aug 3, 2026Filing date unavailableOriginal filing link unavailable |
| 8 | NORWITT RICHARD ADAM Chief Executive Officer | 0.06% | ConversionConversion or exercise of derivative securities. Read alongside sale rows before treating it as bearish.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 686.10K | $22.37 | $15,349,862 | Jul 31, 2026Filing date unavailableOriginal filing link unavailable |
| 9 | NORWITT RICHARD ADAM Chief Executive Officer | 0.06% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 686.10K | $161.76 | $110,986,719 | Jul 31, 2026Filing date unavailableOriginal filing link unavailable |
| 10 | FALCK DAVID P Director | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.55K | No cash value | No cash value | May 22, 2026Filing date unavailableOriginal filing link unavailable |
| 11 | ALTOBELLO NANCY A. Director | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.55K | No cash value | No cash value | May 22, 2026Filing date unavailableOriginal filing link unavailable |
| 12 | LIVINGSTON ROBERT A Director | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.55K | No cash value | No cash value | May 22, 2026Filing date unavailableOriginal filing link unavailable |
Frequently asked
Questions about this quote
Who are the largest APH shareholders?
Blackrock Inc. is the largest reported institutional holder of APH, with 202.50 million shares, or about 16.42% of shares outstanding.
What does the institutional filing activity show for APH?
Amphenol Corp. has 10 institutional rows on file. Previous position sizes are unavailable, so increases and reductions cannot be determined.
What insider transactions are available for APH?
TECHi shows 110 dated APH insider transactions through Aug 6, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.
Are APH insiders buying or selling?
The displayed APH activity reads Mixed, sale-heavy: 44 sales and 1 purchase. Other transaction types remain separate.
Who is the most active reported APH insider?
NORWITT RICHARD ADAM has the largest absolute share movement in the displayed APH filing rows, totaling 9.46 million shares. The action labels provide the transaction context.
What this page answers
Check who owns the float and whether insiders are active.
Explore Institutional concentration, insider transaction pattern, and float context.
Keep in mind Filings are delayed or transactions are administrative rather than economic.
Market closed
Regular hours: 9:30 AM–4:00 PM America/New_York
Next open: 2026-10-22 · 9:30 AM America/New_York
Exchange calendar includes scheduled holidays and early closes. Extended-session prices appear separately only when supplied by the quote source.
Shortcuts
With research tools focused: / search · W watchlist · C compare · F financials · E earnings · N news · T technicals · Esc close