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Mark L Reisenauer

CIK 1413481 · CEO · last filed 2026-06-16

Mark L Reisenauer is a CEO who has filed 14 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for ASRT, was dated Jun 16, 2026. Across all open-market trades the lifetime net is −$1.5M, making them a net seller over the disclosed history.

"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.

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Disclosed Exposure

$0

Companies

2

Total Filings

14

Lifetime Open-Market Net

-$1.54M

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
Assertio Holdings, Inc. (ASRT) Delisted CEO 0 $23.50 $0 $0 4 2026-06-16
MICROMET, INC. (MITI) Delisted SVP, Chief Commercial Officer 398 — — -$1.54M 10 2011-03-18

Recent Filings

14 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-16 Assertio Holdings, Inc. (ASRT) Delisted Mixed −3,583 $0 EDGAR
2026-03-03 Assertio Holdings, Inc. (ASRT) Delisted Grant (A) — $0 EDGAR
2025-11-14 Assertio Holdings, Inc. (ASRT) Delisted Grant (A) — $0 EDGAR
2025-01-03 Assertio Holdings, Inc. (ASRT) Delisted Grant (A) +53,750 $0 EDGAR
2011-03-18 MICROMET, INC. (MITI) Delisted Mixed −80,100 -$275.5K EDGAR
2011-03-17 MICROMET, INC. (MITI) Delisted Mixed −222,200 -$787.5K EDGAR
2011-03-03 MICROMET, INC. (MITI) Delisted Grant (A) — $0 EDGAR
2010-04-05 MICROMET, INC. (MITI) Delisted Grant (A) — $0 EDGAR
2010-02-02 MICROMET, INC. (MITI) Delisted Grant (A) — $0 EDGAR
2009-06-12 MICROMET, INC. (MITI) Delisted Mixed — -$444.5K EDGAR
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Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.