| Insiders | Shares | % | Avg Price | Total $ | |
|---|---|---|---|---|---|
| Buys | 0 | ||||
| Sells | 3 | -1,274,645 | 100% | $17.37 | -$22,145,221 |
| Net | -3 | -1,274,645 | -100% | -$22,145,221 |
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Report Date |
|---|---|---|---|---|---|
| Jonathan Klamkin | Chief Executive Officer, Director, 10%+ Owner | $31,657,407 | -$3,729,905 | -11% | 04 Mar 2026 |
| Mark N. Tompkins | Former 10% Owner | $28,725,311 | -$17,997,456 | -39% | 04 Feb 2026 |
| Lee McCarthy | 10%+ Owner | $12,344,877 | 22 Jun 2021 | ||
| Steven DenBaars | Director | $9,119,491 | -$417,860 | -4.4% | 25 Feb 2026 |
| John Kenneth Paglia | Director | $2,118,153 | 03 Dec 2025 | ||
| Craig H. Ensley | Director | $1,574,149 | 03 Dec 2025 | ||
| Ian Seth Jacobs | Former Director and Officer | $600,000 | 22 Jun 2021 | ||
| Michael Byron | Director | $274,198 | 03 Dec 2025 | ||
| Palvi Kumar Mehta | Director | 15 Nov 2021 | |||
| Christopher P. Stewart | Chief Financial Officer | 04 Aug 2025 | |||
| Interim James Seo | Interim CFO | 18 Mar 2025 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jonathan Klamkin | ALMU | Common Stock | Sale | -3.38% | $902,600 | $18.05 | -50,000 | 1,429,398 | 04 Mar 2026 | Direct |
| Steven Denbaars | ALMU | Common Stock | Sale | -3.14% | $198,094 | $15.85 | -12,500 | 385,088 | 26 Feb 2026 | Direct |
| Steven Denbaars | ALMU | Common Stock | Sale | -3.05% | $219,766 | $17.58 | -12,500 | 397,588 | 25 Feb 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.89% | $507,653 | $14.71 | -34,500 | 1,790,488 | 04 Feb 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -2.01% | $590,250 | $15.74 | -37,500 | 1,824,988 | 02 Feb 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.32% | $397,826 | $15.91 | -25,000 | 1,862,488 | 30 Jan 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.69% | $546,508 | $16.82 | -32,500 | 1,887,488 | 29 Jan 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.54% | $542,231 | $18.07 | -30,000 | 1,919,988 | 22 Jan 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -2.26% | $846,819 | $18.82 | -45,000 | 1,949,988 | 21 Jan 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.48% | $620,617 | $20.69 | -30,000 | 1,994,988 | 20 Jan 2026 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.46% | $533,645 | $17.79 | -30,000 | 2,024,988 | 26 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -0.72% | $240,750 | $16.05 | -15,000 | 2,054,988 | 24 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -0.72% | $223,050 | $14.87 | -15,000 | 2,069,988 | 23 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.65% | $519,050 | $14.83 | -35,000 | 2,084,988 | 22 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.4% | $441,000 | $14.70 | -30,000 | 2,119,988 | 19 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -0.92% | $287,400 | $14.37 | -20,000 | 2,149,988 | 18 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -0.91% | $349,800 | $17.49 | -20,000 | 2,169,988 | 10 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.35% | $504,523 | $16.82 | -30,000 | 2,189,988 | 09 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.77% | $642,420 | $16.06 | -40,000 | 2,219,988 | 08 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.31% | $484,196 | $16.14 | -30,000 | 2,259,988 | 05 Dec 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.29% | $480,980 | $16.03 | -30,000 | 2,289,988 | 04 Dec 2025 | Direct |
| Craig H. Ensley | ALMU | Common Stock | Award | 63.8% | 10,633 | 27,300 | 03 Dec 2025 | Direct | ||
| John Kenneth Paglia | ALMU | Common Stock | Award | 86.9% | 10,861 | 23,361 | 03 Dec 2025 | Direct | ||
| Michael Byron | ALMU | Common Stock | Award | 13,343 | 13,343 | 03 Dec 2025 | Direct | |||
| Steven Denbaars | ALMU | Common Stock | Award | 2.63% | 10,121 | 395,209 | 03 Dec 2025 | Direct | ||
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.59% | $614,625 | $16.39 | -37,500 | 2,319,988 | 20 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.67% | $677,294 | $16.93 | -40,000 | 2,357,488 | 17 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.03% | $482,251 | $19.29 | -25,000 | 2,397,488 | 16 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.62% | $823,424 | $20.59 | -40,000 | 2,422,488 | 15 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.47% | $731,940 | $19.86 | -36,855 | 2,462,488 | 14 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.39% | $599,747 | $16.98 | -35,331 | 2,499,343 | 13 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.36% | $583,471 | $16.67 | -35,000 | 2,534,674 | 10 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.42% | $611,168 | $16.56 | -36,908 | 2,569,674 | 09 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.32% | $611,576 | $17.47 | -35,000 | 2,606,582 | 08 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.31% | $621,268 | $17.75 | -35,000 | 2,641,582 | 07 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -2.32% | $1,189,395 | $18.70 | -63,604 | 2,676,582 | 06 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.12% | $547,136 | $17.57 | -31,147 | 2,740,186 | 03 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.25% | $598,558 | $17.10 | -35,000 | 2,771,333 | 02 Oct 2025 | Direct |
| Mark N. Tompkins | ALMU | Common Stock | Sale | -1.17% | $546,884 | $16.18 | -33,800 | 2,857,033 | 30 Sep 2025 | Direct |
| Michael Byron | ALMU | Stock Option (right to buy) | Award | 3,653 | 3,653 | 01 Sep 2025 | Direct | |||
| Jonathan Klamkin | ALMU | Common Stock | Sale | -9.21% | $2,827,305 | $18.85 | -150,000 | 1,479,398 | 14 Aug 2025 | Direct |
| Jonathan Klamkin | ALMU | Common Stock | Other | 0.15% | 2,403 | 1,629,398 | 01 Jul 2025 | Direct | ||
| Jonathan Klamkin | ALMU | Stock Option | Other | 1.95% | 6,253 | 326,253 | 01 Jul 2025 | Direct | ||
| Mark N. Tompkins | ALMU | Common Stock | Conversion of derivative security | 7.36% | 200,000 | 2,915,833 | 27 Mar 2025 | Direct | ||
| Mark N. Tompkins | ALMU | Convertible Promissory Note | Conversion of derivative security | 0 | 0 | 27 Mar 2025 | Direct |