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Seth Loring Harrison

CIK 1404955 · last filed 2026-07-17

Seth Loring Harrison is a corporate insider who has filed 70 SEC Form 4 insider transactions across 4 companies since 2010. The most recent filing, for STOK, was dated Jul 17, 2026. Across all open-market trades the lifetime net is −$52.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $503.0M across reported positions.

"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

$503.01M

Companies

4

Total Filings

70

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 $29.31 $503.01M $39.63M 11 2026-07-17
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 902,753 — — $5.44M 3 2016-06-16

Recent Filings

70 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
2026-07-17 STOK Gift (G) — $0 EDGAR
2026-06-05 STOK Grant (A) — $0 EDGAR
2025-12-09 Akero Therapeutics, Inc. (AKRO) Delisted Disp (D) −293,762 $0 EDGAR
2025-06-05 Akero Therapeutics, Inc. (AKRO) Delisted Grant (A) +9,398 $0 EDGAR
2025-06-04 STOK Grant (A) — $0 EDGAR
2024-06-11 Akero Therapeutics, Inc. (AKRO) Delisted Grant (A) — $0 EDGAR
2024-06-07 STOK Grant (A) — $0 EDGAR
2023-06-27 Akero Therapeutics, Inc. (AKRO) Delisted Grant (A) — $0 EDGAR
2023-06-15 STOK Grant (A) — $0 EDGAR
2022-12-02 Akero Therapeutics, Inc. (AKRO) Delisted Sell (S) −23,131 -$1.09M EDGAR
Showing 1–10 of 70
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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.