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Insider Trading

Mark N. Tompkins Net Worth

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Last Updated: 1 month ago

Mark N. Tompkins has an estimated net worth of at least $48.4 million*, as of Oct. 29, 2025. They own 2.9 million shares of ALMU stock. They have sold 748,741 shares of ALMU stock since 2021, for an estimated $10.8 million.

Mark N. Tompkins $ALMU SEC Form 4 Insider Trading

Mark N. Tompkins has filed a total of 33 insider trades in $ALMU since 2021. Their most recent trade was a sale of 33,344 shares, made on Oct 17, 2025. Their largest trade was a purchase of 83,333 shares, made on Dec 22, 2022. We estimate that they now own 2.9 million shares of $ALMU, worth an estimated $37.6 million.



Insider Trading at $ALMU

There have been a total of 34 insider trades reported at $ALMU since 2021, with 83,333 shares purchased and 745,425 shares sold. The most active insider traders in $ALMU stock have been Jonathan Klamkin, , and . The most recent trade was a sale of 37,500 shares reported by Mark N. Tompkins (None), made on Oct 20, 2025.



History of Insider Stock Trades by Mark N. Tompkins

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
ALMU logo ALMU Sale 33,344 Oct 17, 2025 Oct. 21, 2025, 4:56 p.m.
ALMU logo ALMU Sale 37,500 Oct 20, 2025 Oct. 21, 2025, 4:56 p.m.
ALMU logo ALMU Sale 743 Oct 17, 2025 Oct. 21, 2025, 4:56 p.m.
ALMU logo ALMU Sale 5,913 Oct 17, 2025 Oct. 21, 2025, 4:56 p.m.
ALMU logo ALMU Sale 24,147 Oct 15, 2025 Oct. 17, 2025, 9 p.m.
ALMU logo ALMU Sale 810 Oct 16, 2025 Oct. 17, 2025, 9 p.m.
ALMU logo ALMU Sale 15,853 Oct 15, 2025 Oct. 17, 2025, 9 p.m.
ALMU logo ALMU Sale 17,540 Oct 16, 2025 Oct. 17, 2025, 9 p.m.
ALMU logo ALMU Sale 6,650 Oct 16, 2025 Oct. 17, 2025, 9 p.m.
ALMU logo ALMU Sale 36,855 Oct 14, 2025 Oct. 14, 2025, 9:59 p.m.
ALMU logo ALMU Sale 30,587 Oct 10, 2025 Oct. 14, 2025, 9:59 p.m.
ALMU logo ALMU Sale 4,413 Oct 10, 2025 Oct. 14, 2025, 9:59 p.m.
ALMU logo ALMU Sale 35,031 Oct 13, 2025 Oct. 14, 2025, 9:59 p.m.
ALMU logo ALMU Sale 300 Oct 13, 2025 Oct. 14, 2025, 9:59 p.m.
ALMU logo ALMU Sale 26,693 Oct 07, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 7,907 Oct 07, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 400 Oct 07, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 34,300 Oct 08, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 700 Oct 08, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 35,908 Oct 09, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 1,000 Oct 09, 2025 Oct. 9, 2025, 9:30 p.m.
ALMU logo ALMU Sale 34,880 Oct 02, 2025 Oct. 6, 2025, 9:24 p.m.
ALMU logo ALMU Sale 120 Oct 02, 2025 Oct. 6, 2025, 9:24 p.m.
ALMU logo ALMU Sale 18,189 Oct 03, 2025 Oct. 6, 2025, 9:24 p.m.
ALMU logo ALMU Sale 12,958 Oct 03, 2025 Oct. 6, 2025, 9:24 p.m.
ALMU logo ALMU Sale 63,604 Oct 06, 2025 Oct. 6, 2025, 9:24 p.m.
ALMU logo ALMU Sale 33,380 Sep 30, 2025 Oct. 2, 2025, 6:12 a.m.
ALMU logo ALMU Sale 23,382 Sep 29, 2025 Oct. 2, 2025, 6:12 a.m.
ALMU logo ALMU Sale 1,618 Sep 29, 2025 Oct. 2, 2025, 6:12 a.m.
ALMU logo ALMU Sale 200 Sep 30, 2025 Oct. 2, 2025, 6:12 a.m.
ALMU logo ALMU Sale 9,133 Oct 01, 2025 Oct. 2, 2025, 6:12 a.m.
ALMU logo ALMU Sale 41,367 Oct 01, 2025 Oct. 2, 2025, 6:12 a.m.
None logo None Sale 50,000 Aug 26, 2025 Aug. 28, 2025, 7:03 p.m.
None logo None Sale 25,000 Aug 26, 2025 Aug. 28, 2025, 7:01 p.m.
None logo None Sale 25,000 Jul 16, 2025 July 18, 2025, 6:08 p.m.
ALMU logo ALMU Purchase 83,333 Dec 22, 2022 Jan. 13, 2023, 5:38 p.m.
None logo None Purchase 250,000 Nov 12, 2021 Nov. 16, 2021, 9 a.m.
NONE logo NONE Purchase 107,500 Jun 25, 2021 June 28, 2021, 8 p.m.
NONE logo NONE Purchase 250,000 Jun 22, 2021 June 28, 2021, 8 p.m.
AMST logo AMST Sale 17,494 May 28, 2021 June 1, 2021, 8 p.m.
AMST logo AMST Sale 35,822 Jun 01, 2021 June 1, 2021, 8 p.m.




$ALMU Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.