Mark N. Tompkins
Mark N. Tompkins: Former 10% Owner at Aeluma. What Mark N. Tompkins holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.
Aeluma (ALMU)
Mark N. Tompkins holds 1.8M Aeluma shares (10.1% of the company), worth about $19.3M at the last price, according to the Form 4 of Feb 4, 2026.
- Shares held: 1.8M (10.1%), $19.3M — Held in their own name.
Declarations
- Aeluma (ALMU) — Form 4 of Feb 4, 2026 (Former 10% Owner): open-market sale of 28,544 at $14.63; open-market sale of 5,956 at $15.12; 1.8M shares after 0001213900-26-012958
- Aeluma (ALMU) — Form 4 of Feb 2, 2026: open-market sale of 27,297 at $16.75; open-market sale of 5,203 at $17.16; 1.8M shares after 0001213900-26-010999
- Aeluma (ALMU) — Form 4 of Jan 22, 2026: open-market sale of 29,112 at $20.66; open-market sale of 888 at $21.58; 1.9M shares after 0001213900-26-006847
- Aeluma (ALMU) — Form 4 of Dec 26, 2025: open-market sale of 15,000 at $14.87; open-market sale of 15,000 at $16.05; 2.0M shares after 0001213900-25-126234
- Aeluma (ALMU) — Form 4 of Dec 22, 2025: open-market sale of 20,000 at $14.37; open-market sale of 30,000 at $14.70; 2.1M shares after 0001213900-25-124798
- Aeluma (ALMU) — Form 4 of Dec 10, 2025: open-market sale of 10,861 at $16.39; open-market sale of 19,139 at $17.06; 2.2M shares after 0001213900-25-120879
- Aeluma (ALMU) — Form 4 of Dec 8, 2025: open-market sale of 11,500 at $15.49; open-market sale of 18,500 at $16.37; 2.2M shares after 0001213900-25-119418
- Aeluma (ALMU) — Form 4 of Oct 20, 2025: open-market sale of 33,344 at $16.75; open-market sale of 5,913 at $17.77; 2.3M shares after 0001213900-25-100863
- Aeluma (ALMU) — Form 4 of Oct 16, 2025: open-market sale of 24,147 at $20.11; open-market sale of 15,853 at $21.31; 2.4M shares after 0001213900-25-100092
- Aeluma (ALMU) — Form 4 of Oct 14, 2025: open-market sale of 30,587 at $16.60; open-market sale of 4,413 at $17.16; 2.5M shares after 0001213900-25-098954
- Aeluma (ALMU) — Form 4 of Oct 9, 2025: open-market sale of 26,693 at $17.46; open-market sale of 7,907 at $18.66; 2.6M shares after 0001213900-25-097904
- Aeluma (ALMU) — Form 4 of Oct 6, 2025: open-market sale of 34,880 at $17.10; open-market sale of 120 at $17.58; 2.7M shares after 0001213900-25-096784
- Aeluma (ALMU) — Form 4 of Oct 1, 2025: open-market sale of 23,382 at $17.52; open-market sale of 1,618 at $18.36; 2.8M shares after 0001213900-25-094948
- Aeluma (ALMU) — Form 4/A of Sep 30, 2025: open-market sale of 33,800 at $16.18; 2.9M shares after 0001213900-25-096783
- Aeluma (ALMU) — Form 4 of Mar 27, 2025: conversion of 200,000 at $3.50; 2.9M shares after 0001213900-25-026517
Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.
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