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JOHN MICHAEL DUNN

CIK 1238648 · General Counsel and Secretary · last filed 2023-11-20

JOHN MICHAEL DUNN is a General Counsel and Secretary who has filed 41 SEC Form 4 insider transactions across 4 companies since 2007. Across all open-market trades the lifetime net is −$6.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.5M across reported positions. 38 SEC filings were submitted jointly with BIOGEN INC.

"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

$5.47M

Companies

4

Total Filings

41

Lifetime Open-Market Net

-$6.25M

Filer Profile

Reported Address
C/O VITAL THERAPIES, INC.
15010 AVENUE OF SCIENCE, SUITE 200
SAN DIEGO, CA 92128
Related Filers
BIOGEN INC. — 38 joint filings, latest 2009-02-26
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
Acer Therapeutics Inc. (ACER) Delisted Director 27,380 $0.66 $18.1K $75.0K 6 2023-03-16
Acer Therapeutics Inc. (ACERW) Delisted Director — — — $0 1 2017-10-06
Acer Therapeutics Inc. (OPXAW) Delisted Director 5,952 — — $0 1 2017-09-21
BIIB EVP, New Ventures 24,752 $220.83 $5.47M -$6.32M 25 2009-02-26

Recent Filings

41 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
2023-11-20 — Disp (D) −27,380 $0
2023-03-16 Acer Therapeutics Inc. (ACER) Delisted Grant (A) — $0 EDGAR
2022-01-19 Acer Therapeutics Inc. (ACER) Delisted Grant (A) — $0 EDGAR
2021-01-20 Acer Therapeutics Inc. (ACER) Delisted Grant (A) — $0 EDGAR
2020-07-28 Acer Therapeutics Inc. (ACER) Delisted Buy (P) +21,428 $75.0K EDGAR
2020-01-03 Acer Therapeutics Inc. (ACER) Delisted Grant (A) — $0 EDGAR
2019-02-05 Acer Therapeutics Inc. (ACER) Delisted Grant (A) — $0 EDGAR
2019-01-14 — Mixed — $0
2018-06-11 — Grant (A) — $0
2017-10-06 Acer Therapeutics Inc. (ACERW) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 41
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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.