Seth Loring Harrison
CIK 1404955 · last filed 2026-06-05
"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
$511.76M
Companies
4
Total Filings
69
Lifetime Open-Market Net
-$52.02M
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 |
|---|---|---|---|---|---|---|---|
| STOK | Director | 17,161,713 | $29.82 | $511.76M | $39.63M | 10 | 2026-06-05 |
| Akero Therapeutics, Inc. (AKRO) Delisted | Director | 0 | $54.65 | $0 | $14.28M | 13 | 2025-12-09 |
| HeartWare International, Inc. (HTWR) Delisted | Director | 0 | — | — | -$111.36M | 31 | 2016-08-24 |
| Eledon Pharmaceuticals, Inc. (TKAI) Delisted | Director | 8,124,773 | — | — | $5.44M | 3 | 2016-06-16 |
Recent Filings · Page 6 of 7
69 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2012-05-08 | HeartWare International, Inc. (HTWR) Delisted | Exer (M) | +333 | $0 | EDGAR |
| 2012-04-30 | HeartWare International, Inc. (HTWR) Delisted | Sell (S) | −30,019 | -$2.32M | EDGAR |
| 2012-03-05 | HeartWare International, Inc. (HTWR) Delisted | Mixed | −479,925 | $0 | EDGAR |
| 2011-05-16 | HeartWare International, Inc. (HTWR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2011-05-06 | HeartWare International, Inc. (HTWR) Delisted | Exer (M) | +334 | $0 | EDGAR |
| 2010-12-13 | HeartWare International, Inc. (HTWR) Delisted | Sell (S) | −1,000,000 | -$77.86M | EDGAR |
| 2010-05-06 | HeartWare International, Inc. (HTWR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2008-09-19 | — | Buy (P) | +50,000 | $24.2K | |
| 2008-09-11 | — | Buy (P) | +50,000 | $24.2K | |
| 2008-09-05 | — | Buy (P) | +5,000 | $2.4K |
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.