Mark N. Tompkins

CIK 1455971 · last filed 2026-05-27

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$95.74M

Companies

3

Total Filings

62

Lifetime Open-Market Net

-$23.81M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
ALMU	10%+ Owner	1,796,444	$25.20	$45.27M	-$19.83M	15	2026-02-05
AMST	10%+ Owner	2,043,103	$1.26	$2.57M	-$2.54M	16	2021-06-02
AKTS	10%+ Owner	2,184,160	$21.93	$47.90M	-$1.44M	10	2017-12-29

Recent Filings · Page 6 of 7

62 filings

Form 4 transactions across all companies, newest first.

Filed	Symbol	Action	Net Shares	Net $	Link
2017-12-27	AKTS	Sell (S)	−12,500	-$78.5K	EDGAR
2017-12-22	AKTS	Sell (S)	−10,000	-$62.7K	EDGAR
2017-12-21	AKTS	Sell (S)	−24,513	-$153.5K	EDGAR
2017-09-29	AKTS	Sell (S)	−22,955	-$156.9K	EDGAR
2017-09-28	—	Buy (P)	+166,667	$500.0K
2017-09-26	—	Grant (A)	+702,160	$0
2017-09-22	AKTS	Sell (S)	−25,291	-$189.7K	EDGAR
2017-09-14	AKTS	Sell (S)	−11,676	-$77.8K	EDGAR
2017-09-12	AKTS	Sell (S)	−48,230	-$329.2K	EDGAR
2017-09-08	AKTS	Sell (S)	−15,800	-$115.4K	EDGAR

Showing 51–60 of 62

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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.