Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| AMPL | Skates Spenser | CEO and President | 10/28/2026 | Verkauf | 17.53 | 6,651 | 116,564 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/28/2026 | Wandlung | — | 6,651 | — | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/26/2026 | Verkauf | 17.47 | 200 | 3,494 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/26/2026 | Verkauf | 17.45 | 100 | 1,745 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/26/2026 | Wandlung | — | 300 | — | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/23/2026 | Verkauf | 17.52 | 107,136 | 1,876,958 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/23/2026 | Wandlung | — | 107,136 | — | Form 4 |
| AMPL | Raji Vijaye Ganesh | Director | 10/15/2026 | Zuteilung | — | 37,851 | — | Form 4 |
| AMPL | Schultz Erica | Director | 10/05/2026 | Zuteilung | — | 892 | — | Form 4 |
| AMPL | Tzuo Tien | Director | 10/05/2026 | Zuteilung | — | 818 | — | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/02/2026 | Verkauf | 14.52 | 70,087 | 1,017,684 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/02/2026 | Wandlung | — | 70,087 | — | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/01/2026 | Verkauf | 14.45 | 3,539 | 51,139 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 10/01/2026 | Wandlung | — | 3,539 | — | Form 4 |
| AMPL | Skates Spenser | CEO and President | 09/30/2026 | Verkauf | 14.45 | 1,374 | 19,858 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 09/30/2026 | Wandlung | — | 1,374 | — | Form 4 |
| AMPH | Peters William J | CFO, EVP & TREASURER | 09/21/2026 | Verkauf | 25.00 | 4,139 | 103,475 | Form 4 |
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/16/2026 | Verkauf | 23.94 | 10,000 | 239,404 | Form 4 |
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/16/2026 | Optionsausübung | 13.35 | 10,000 | 133,500 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 09/10/2026 | Verkauf | 12.30 | 185,000 | 2,275,611 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 09/10/2026 | Wandlung | — | 185,000 | — | Form 4 |
| AMPL | Crook Nathaniel Glenn | Chief Commercial Officer | 09/04/2026 | Verkauf | 12.99 | 300,000 | 3,897,750 | Form 4 |
| AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 09/02/2026 | Verkauf | 23.63 | 3,187 | 75,306 | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Zuteilung | — | 346 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Schenkung | — | 346 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/25/2026 | Schenkung | — | 5,000 | — | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/24/2026 | Verkauf | 10.03 | 8,000 | 80,240 | Form 4 |
| AMPX | Stepien Thomas M | Chief Executive Officer | 08/21/2026 | Verkauf | 10.34 | 23,529 | 243,313 | Form 4 |
| AMPX | Stefan Constantin Ionel | Chief Technology Officer | 08/21/2026 | Verkauf | 10.34 | 29,681 | 306,931 | Form 4 |
| AMPX | Sun Kang | Director | 08/21/2026 | Verkauf | 10.34 | 62,101 | 642,186 | Form 4 |
| AMPG | Maqbool Fawad | Chief Executive Officer | 08/20/2026 | Kauf | 3.45 | 7,247 | 24,999 | Form 4 |
| AMPG | Maqbool Fawad | Chief Executive Officer | 08/20/2026 | Kauf | 3.53 | 5,000 | 17,650 | Form 4 |
| AMPL | Liu Curtis | Chief Technology Officer | 08/17/2026 | Steuer-Abgabe | 13.03 | 53,878 | 702,030 | Form 4 |
| AMPL | Skates Spenser | CEO and President | 08/17/2026 | Steuer-Abgabe | 13.03 | 52,369 | 682,368 | Form 4 |
| AMPL | Crook Nathaniel Glenn | Chief Commercial Officer | 08/17/2026 | Steuer-Abgabe | 13.03 | 109,368 | 1,425,065 | Form 4 |
| AMPL | Casey Andrew | Chief Financial Officer | 08/17/2026 | Steuer-Abgabe | 13.03 | 72,814 | 948,766 | Form 4 |
| AMPH | Prins Richard K | Director | 08/11/2026 | Verkauf | 20.30 | 7,973 | 161,852 | Form 4 |
| AMP | Brockman Dawn M. | SVP AND CONTROLLER | 08/10/2026 | Verkauf | 558.93 | 472 | 263,815 | Form 4 |
| AMP | Melloh Heather J. | EVP AND GENERAL COUNSEL | 08/10/2026 | Steuer-Abgabe | 559.62 | 469 | 262,459 | Form 4 |
| AMP | Melloh Heather J. | EVP AND GENERAL COUNSEL | 08/10/2026 | Optionsausübung | 197.87 | 722 | 142,862 | Form 4 |
| AMPH | Peters William J | CFO, EVP & TREASURER | 08/07/2026 | Verkauf | 22.48 | 8,180 | 183,886 | Form 4 |
| AMPH | Peters William J | CFO, EVP & TREASURER | 08/07/2026 | Optionsausübung | 19.79 | 5,053 | 99,999 | Form 4 |
| AMP | McGraw Deirdre Davey | EVP Mktg, Strat. & Comms. | 08/06/2026 | Verkauf | 558.28 | 2,400 | 1,339,867 | Form 4 |
| AMP | McGraw Deirdre Davey | EVP Mktg, Strat. & Comms. | 08/06/2026 | Steuer-Abgabe | 558.08 | 2,191 | 1,222,753 | Form 4 |
| AMP | McGraw Deirdre Davey | EVP Mktg, Strat. & Comms. | 08/06/2026 | Optionsausübung | 298.09 | 1,000 | 298,090 | Form 4 |
| AMP | Berman Walter Stanley | EXECUTIVE VP AND CFO | 07/28/2026 | Verkauf | 549.76 | 422 | 231,998 | Form 4 |
| AMP | Berman Walter Stanley | EXECUTIVE VP AND CFO | 07/28/2026 | Verkauf | 548.92 | 10,590 | 5,813,032 | Form 4 |
| AMP | Berman Walter Stanley | EXECUTIVE VP AND CFO | 07/28/2026 | Steuer-Abgabe | 550.81 | 23,099 | 12,723,160 | Form 4 |
| AMP | Berman Walter Stanley | EXECUTIVE VP AND CFO | 07/28/2026 | Optionsausübung | 197.87 | 23,206 | 4,591,771 | Form 4 |
| AMP | Berman Walter Stanley | EXECUTIVE VP AND CFO | 07/28/2026 | Optionsausübung | 165.41 | 10,905 | 1,803,796 | Form 4 |
| AMP | Cracchiolo James M | CHAIRMAN AND CEO | 07/28/2026 | Verkauf | 546.67 | 1,900 | 1,038,665 | Form 4 |
| AMP | Cracchiolo James M | CHAIRMAN AND CEO | 07/28/2026 | Verkauf | 545.28 | 16,120 | 8,789,896 | Form 4 |
| AMP | Cracchiolo James M | CHAIRMAN AND CEO | 07/28/2026 | Steuer-Abgabe | 545.83 | 34,912 | 19,056,017 | Form 4 |
| AMP | Cracchiolo James M | CHAIRMAN AND CEO | 07/28/2026 | Optionsausübung | 165.41 | 52,932 | 8,755,482 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/28/2026 | Verkauf | 541.90 | 908 | 492,045 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/28/2026 | Verkauf | 540.07 | 3,200 | 1,728,221 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/28/2026 | Verkauf | 538.23 | 4,102 | 2,207,819 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/28/2026 | Steuer-Abgabe | 538.01 | 6,840 | 3,679,988 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/28/2026 | Optionsausübung | 165.41 | 10,948 | 1,810,909 | Form 4 |
| AMP | Williams William Jerryl | Pres, Wealth Mgmt Advisor Grp | 07/27/2026 | Verkauf | 537.61 | 6 | 3,226 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).