ALGM's three largest insider shareholders as of September 12, 2026 are Electric Co., Ltd. Sanken (TenPercentOwner, 59.73Mn shares), Electric Co., Ltd. Sanken (TenPercentOwner, 59.73Mn shares), Skna, L.P. Oep (TenPercentOwner, 17.65Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Electric Co., Ltd. Sanken | TenPercentOwner | 59,732,782 | 0 | 59,732,782 | 72.9% | 09 Aug, 2024 |
| 2 | Skna, L.P. Oep | TenPercentOwner | 0 | 17,649,247 | 17,649,247 | 21.5% | 06 Feb, 2023 |
| 3 | Ravi Vig | President And Ceo | 2,392,613 | 0 | 2,392,613 | 2.9% | 15 Jun, 2022 |
| 4 | Michael Doogue | President And Ceo | 339,584 | 0 | 339,584 | 0.4% | 15 May, 2026 |
| 5 | Max R. Glover | Svp Of Worldwide Sales | 266,339 | 0 | 266,339 | 0.3% | 19 Nov, 2024 |
| 6 | Derek D'Antilio | Evp, Cfo Treasurer | 238,813 | 0 | 238,813 | 0.3% | 19 May, 2026 |
| 7 | Reza Kazerounian | Director | 219,808 | 0 | 219,808 | 0.3% | 04 Aug, 2023 |
| 8 | Yoshihiro Suzuki | Director | 217,811 | 0 | 217,811 | 0.3% | 07 Aug, 2026 |
| 9 | Christopher Brown | Svp And General Counsel | 144,988 | 0 | 144,988 | 0.2% | 23 Nov, 2021 |
| 10 | Joanne Valente | Svp, Chro | 126,718 | 0 | 126,718 | 0.2% | 21 Nov, 2023 |
| 11 | Suman Narayan | Svp, Products | 123,084 | 0 | 123,084 | 0.2% | 03 Sep, 2024 |
| 12 | Sharon Briansky | Svp, Gc And Secretary | 79,753 | 0 | 79,753 | 0.1% | 19 May, 2026 |
| 13 | Troy Coleman | Svp, General Manager, Products | 77,476 | 0 | 77,476 | 0.1% | 26 May, 2026 |
| 14 | Richard Madormo | Svp, Worldwide Sales | 74,687 | 0 | 74,687 | 0.1% | 19 May, 2026 |
| 15 | Thomas C. Jr. Teebagy | Svp Of Operations And Quality | 73,336 | 0 | 73,336 | 0.1% | 08 Dec, 2022 |
| 16 | Joseph R Martin | Director | 39,430 | 0 | 39,430 | 0.0% | 07 Aug, 2026 |
| 17 | Erin Hagen | Svp, Chro | 31,052 | 0 | 31,052 | 0.0% | 12 Aug, 2026 |
| 18 | David J Aldrich | Director | 26,746 | 0 | 26,746 | 0.0% | 09 Aug, 2024 |
| 19 | Ian Kent | Svp, Global Operations | 25,392 | 0 | 25,392 | 0.0% | 19 May, 2026 |
| 20 | Mary G Puma | Director | 21,734 | 0 | 21,734 | 0.0% | 07 Aug, 2026 |
| 21 | Richard R. Lury | Director | 18,857 | 0 | 18,857 | 0.0% | 13 Aug, 2025 |
| 22 | Krishna G. Palepu | Director | 14,212 | 0 | 14,212 | 0.0% | 07 Aug, 2026 |
| 23 | Jennie Raubacher | Director | 13,976 | 0 | 13,976 | 0.0% | 18 Aug, 2026 |
| 24 | Roald Graham Webster | Vp, Chief Accounting Officer | 13,106 | 0 | 13,106 | 0.0% | 22 May, 2026 |
| 25 | Paul Iv Schorr | Director | 10,199 | 0 | 10,199 | 0.0% | 09 Aug, 2024 |
| 26 | Noriharu Fujita | Director | 10,036 | 0 | 10,036 | 0.0% | 30 Sep, 2021 |
| 27 | Robert Willett | Director | 1,094 | 0 | 1,094 | 0.0% | 15 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Jennie Raubacher | Director | Disposed S | 1,000 | $45.32 | $45.32K | 13,976 | Direct |
| 10 Aug, 2026 | Erin Hagen | Svp, Chro | Disposed S | 2,285 | $44.39 | $101.43K | 31,052 | Direct |
| 05 Aug, 2026 | Krishna G. Palepu | Director | Acquired A | 4,251 | $0.00 | $0 | 14,212 | Direct |
| 05 Aug, 2026 | Mary G Puma | Director | Acquired A | 4,251 | $0.00 | $0 | 21,734 | Direct |
| 05 Aug, 2026 | Jennie Raubacher | Director | Acquired A | 4,251 | $0.00 | $0 | 4,251 | Direct |
| 05 Aug, 2026 | Joseph R Martin | Director | Acquired A | 4,251 | $0.00 | $0 | 39,430 | Direct |
| 05 Aug, 2026 | Yoshihiro Suzuki | Director | Acquired A | 4,251 | $0.00 | $0 | 217,811 | Direct |
| 22 May, 2026 | Troy Coleman | Svp, General Manager, Products | Disposed S | 4,500 | $45.72 | $205.74K | 77,476 | Direct |
| 21 May, 2026 | Roald Graham Webster | Vp, Chief Accounting Officer | Disposed S | 5,217 | $44.89 | $234.17K | 13,106 | Direct |
| 16 May, 2026 | Ian Kent | Svp, Global Operations | Disposed F | 2,345 | $43.10 | $101.07K | 28,034 | Direct |
| 16 May, 2026 | Derek D'Antilio | Evp, Cfo Treasurer | Disposed F | 37,840 | $43.10 | $1.63Mn | 238,813 | Direct |
| 16 May, 2026 | Sharon Briansky | Svp, Gc And Secretary | Disposed F | 13,942 | $43.10 | $600.90K | 79,753 | Direct |
| 16 May, 2026 | Richard Madormo | Svp, Worldwide Sales | Disposed F | 5,439 | $43.10 | $234.42K | 74,687 | Direct |
| 16 May, 2026 | Roald Graham Webster | Vp, Chief Accounting Officer | Disposed F | 4,277 | $43.10 | $184.34K | 18,323 | Direct |
| 16 May, 2026 | Erin Hagen | Svp, Chro | Disposed F | 5,815 | $43.10 | $250.63K | 33,337 | Direct |
| 18 May, 2026 | Ian Kent | Svp, Global Operations | Disposed S | 2,642 | $41.56 | $109.80K | 25,392 | Direct |
| 13 May, 2026 | Ian Kent | Svp, Global Operations | Acquired A | 8,492 | $0.00 | $0 | 30,379 | Direct |
| 13 May, 2026 | Derek D'Antilio | Evp, Cfo Treasurer | Acquired A | 29,439 | $0.00 | $0 | 246,215 | Direct |
| 13 May, 2026 | Erin Hagen | Svp, Chro | Acquired A | 9,058 | $0.00 | $0 | 39,152 | Direct |
| 13 May, 2026 | Roald Graham Webster | Vp, Chief Accounting Officer | Acquired A | 4,756 | $0.00 | $0 | 22,056 | Direct |