TPST · Insider Trading

Tempest Therapeutics, Inc. Common Stock

Every open-market purchase and sale reported by TPST officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
5
code P
Sales
1
code S
Reporting Insiders
4
current holders
TPST — Recent Form 4 Transactions (latest 2026-10-02)
FiledInsiderRole TypeSharesValue
2026-10-02 Nancy Freda Smith Director A +25,000 deriv. —
2026-06-23 Matthew Angel CEO and President Buy +231,482 +$500.00K
2026-06-17 John D. Yee Director A +25,000 deriv. —
2026-06-08 William Drake Richey Director A +25,000 deriv. —
2026-04-02 Nicholas Maestas Chief Financial Officer A +140,000 deriv. —
2026-04-02 Justin Trojanowski Corporate Controller A +22,000 deriv. —
2026-03-25 Matthew Angel CEO and President Buy +231,482 +$500.00K
2026-02-06 Matthew Angel CEO and President A +269,621 deriv. —
2026-01-28 Michael Raab Director A +1,230 deriv. —
2026-01-28 Ronit Simantov Director A +1,230 deriv. —
2026-01-28 Geoffrey Nichol Director A +1,230 deriv. —
2026-01-28 Christine A Pellizzari Director A +1,230 deriv. —
2025-01-06 Stephen R Brady President and CEO A +550,000 deriv. —
2025-01-06 Samuel Whiting Chief Medical Officer A +270,000 deriv. —
2025-01-06 Justin Trojanowski Corporate Controller A +30,000 deriv. —
2025-01-06 Nicholas Maestas Chief Financial Officer A +200,000 deriv. —
2024-08-12 Versant Side Fund IV, L.P. 10%+ Owner Sell −7,091,991 −$8.70M
2024-07-08 Stephen R Brady President and CEO Buy +35,000 +$73.85K
2024-07-03 Samuel Whiting Chief Medical Officer Buy +4,672 +$9.95K
2024-07-02 Justin Trojanowski Corporate Controller Buy +7,500 +$16.20K
2024-06-14 Christine A Pellizzari Director A +16,000 deriv. —
2024-06-14 Geoffrey Nichol Director A +16,000 deriv. —
2024-06-14 Ronit Simantov Director A +16,000 deriv. —
2024-06-14 Michael Raab Director A +16,000 deriv. —
2024-01-05 Samuel Whiting Chief Medical Officer A +100,000 deriv. —
2024-01-05 Nicholas Maestas VP of Strategy and Finance A +40,000 deriv. —
2024-01-05 Stephen R Brady President and CEO A +250,000 deriv. —
2024-01-05 Justin Trojanowski Principal Accounting Officer A +26,500 deriv. —
2023-10-13 Nicholas Maestas VP of Strategy and Finance A +100,000 deriv. —
2023-10-13 Justin Trojanowski Corporate Controller A +55,000 deriv. —
2023-10-13 Stephen R Brady President and CEO A +725,000 deriv. —
2023-10-13 Samuel Whiting Chief Medical Officer A +325,000 deriv. —
2023-06-20 Michael Raab Director A +8,200 deriv. —
2023-06-20 Christine A Pellizzari Director A +8,200 deriv. —
2023-06-20 Ronit Simantov Director A +8,200 deriv. —
2023-06-20 Geoffrey Nichol Director A +8,200 deriv. —
2023-01-05 Nicholas Maestas VP of Strategy and Finance A +38,425 deriv. —
2023-01-05 Samuel Whiting Chief Medical Officer A +69,700 deriv. —
2023-01-05 Thomas W. Dubensky President A +102,700 deriv. —
2023-01-05 Justin Trojanowski Corporate Controller A +20,300 deriv. —
2023-01-05 Stephen R Brady Chief Executive Officer A +177,300 deriv. —
2022-10-04 Justin Trojanowski Corporate Controller A +2,500 deriv. —
2022-06-22 Thomas W. Dubensky President A +87,801 deriv. —
2022-06-22 Stephen R Brady Chief Executive Officer A +173,533 deriv. —
2022-06-22 Geoffrey Nichol Director A +3,500 deriv. —
2022-06-22 Samuel Whiting Chief Medical Officer A +55,680 deriv. —
2022-06-22 Pierre Lorenzo Corporate Controller A +8,477 deriv. —
2022-06-22 Thomas Woiwode Director A +3,500 deriv. —
2022-06-22 Nicholas Maestas VP of Strategy and Finance A +51,270 deriv. —
2022-06-22 Michael Raab Director A +3,500 deriv. —
TPST — Current Insider Holders
InsiderRole Shares HeldValue
Matthew Angel CEO and President 5,068,552 $2.59M
Stephen R Brady President and CEO 3,567 $1.82K
Justin Trojanowski Corporate Controller 1,705 $870
Samuel Whiting Chief Medical Officer 736 $376
TPST Insider Trading FAQ
Who are the insiders at TPST?
4 officers, directors and 10%+ beneficial owners currently report holdings in TPST via SEC Form 4.
Are TPST insiders buying or selling?
Across the 50 most recent Form 4 filings for TPST, 5 were open-market purchases (code P) and 1 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is TPST insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent TPST filing is dated 2026-10-02.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the TPST quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.