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MICHAEL THOMAS HENDERSON

CIK 1779990 · Chief Executive Officer · last filed 2026-09-03

MICHAEL THOMAS HENDERSON is a Chief Executive Officer who has filed 71 SEC Form 4 insider transactions across 4 companies since 2019. The most recent filing, for APGE, was dated Sep 3, 2026. Across all open-market trades the lifetime net is −$49.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $26.1M across reported positions. 23 SEC filings were submitted jointly with BridgeBio Pharma, 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

$26.08M

Companies

4

Total Filings

71

Lifetime Open-Market Net

-$49.55M

Filer Profile

Reported Address
421 KIPLING STREET
PALO ALTO, CA 94301
Related Filers
BridgeBio Pharma, Inc. — 23 joint filings, latest 2020-12-17
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
APGE Chief Executive Officer 0 $135.07 $0 -$37.96M 26 2026-09-03
SYRE Director 68,606 $90.60 $6.22M -$7.95M 7 2026-06-23
ARYA Sciences Acquisition Corp IV (ARYD) Delisted Director — $6.64 — $0 1 2024-07-31
BBIO Chief Business Officer 274,211 $72.44 $19.86M -$3.64M 22 2020-12-17

Recent Filings

71 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
2026-09-03 APGE Disp (D) −920,941 $0 EDGAR
2026-07-10 APGE Mixed −95,046 -$2.67M EDGAR
2026-06-24 APGE Sell (S) −80,000 -$10.60M EDGAR
2026-06-23 SYRE Sell (S) −20,000 -$2.00M EDGAR
2026-06-22 SYRE Notice (144) −20,000 -$1.77M EDGAR
2026-06-22 APGE Notice (144) −80,000 -$10.60M EDGAR
2026-06-12 APGE Sell (S) −20,000 -$1.67M EDGAR
2026-05-29 SYRE Grant (A) — $0 EDGAR
2026-05-15 APGE Sell (S) −20,000 -$1.64M EDGAR
2026-05-13 APGE Notice (144) −60,000 -$4.95M EDGAR
Showing 1–10 of 71
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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.