Michael R Hayden
CIK 1352908 · last filed 2026-07-06
"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
$19.26M
Companies
5
Total Filings
61
Lifetime Open-Market Net
$1.28M
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 |
|---|---|---|---|---|---|---|---|
| IONS | Director | 56,298 | $53.41 | $3.01M | $659.0K | 20 | 2026-07-06 |
| ABCL | Director | 118,245 | $5.61 | $663.4K | -$801.5K | 10 | 2026-06-12 |
| 89bio, Inc. (ETNB) Delisted | Director | 0 | $14.84 | $0 | $1.38M | 11 | 2025-10-30 |
| XENE | Director | 230,609 | $64.36 | $14.84M | $41.2K | 19 | 2021-06-03 |
| AUPH | Director | 50,000 | $15.04 | $752.2K | $0 | 1 | 2021-02-02 |
Recent Filings · Page 2 of 7
61 filingsInsider 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 |
|---|---|---|---|---|---|
| 2024-06-24 | ABCL | Grant (A) | — | $0 | EDGAR |
| 2024-02-05 | 89bio, Inc. (ETNB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-09-26 | ABCL | Buy (P) | +20,000 | $98.2K | EDGAR |
| 2023-08-09 | ABCL | Buy (P) | +30,000 | $177.0K | EDGAR |
| 2023-07-19 | IONS | Exer (M) | +7,110 | $0 | EDGAR |
| 2023-07-06 | IONS | Grant (A) | — | $0 | EDGAR |
| 2023-03-30 | 89bio, Inc. (ETNB) Delisted | Buy (P) | +87,788 | $1.08M | EDGAR |
| 2023-02-13 | 89bio, Inc. (ETNB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-12-05 | ABCL | Grant (A) | — | $0 | EDGAR |
| 2022-10-18 | IONS | Exer (M) | +1,777 | $0 | EDGAR |
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.
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.