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Tempest Therapeutics, Inc. (TPST) institutional ownership

Market cap$11M SectorHealthcare
Funds holding · Q1 2026
11
reported TPST position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
6 buyers · 5 sellers

Tempest Therapeutics, Inc. (TPST) price and institutional activity

Dates

Q1 2026

$0 bought by 6 investors
VanguardGeode +4 more
$0 sold by 5 investors
Sabby Management, LLCUBS Group AG +3 more
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Bought Sold Totals per quarter; hover a bar for the names.

Tempest Therapeutics, Inc. (TPST) institutional activity · 11

Investor Type Est. change Change Δ Own Date
Sabby Management, LLC · Reduced
Change −161K Date Q1 2026
Sabby Management, LLC Reduced· Q1 2026 −161K Q1 2026
Vanguard · Added
Change +140K Date Q1 2026
Vanguard Added· Q1 2026 +140K Q1 2026
Geode · Added
Change +43K Date Q1 2026
Geode Added· Q1 2026 +43K Q1 2026
UBS Group AG · Reduced
Change −13K Date Q1 2026
UBS Group AG Reduced· Q1 2026 −13K Q1 2026
Drw Securities, LLC · Exited
Change −10K Δ Own −100.0% Date Q1 2026
Drw Securities, LLC Exited· Q1 2026 −10K −100.0% Q1 2026
Tower Research Capital LLC (trc) · Added
Change +1K Date Q1 2026
Tower Research Capital LLC (trc) Added· Q1 2026 +1K Q1 2026
Osaic Holdings, Inc. · Reduced
Change −84 Date Q1 2026
Osaic Holdings, Inc. Reduced· Q1 2026 −84 Q1 2026
Bank of America Corp · Exited
Change −37 Δ Own −100.0% Date Q1 2026
Bank of America Corp Exited· Q1 2026 −37 −100.0% Q1 2026
Royal Bank of Canada · Added
Change +19 Date Q1 2026
Royal Bank of Canada Added· Q1 2026 +19 Q1 2026
Citigroup Inc · New
Change +8 Date Q1 2026
Citigroup Inc New· Q1 2026 +8 Q1 2026
JPMorgan Chase & Co · New
Change +5 Date Q1 2026
JPMorgan Chase & Co New· Q1 2026 +5 Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
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Famous investor activity in Tempest Therapeutics, Inc. (TPST)

Tempest Therapeutics, Inc. (TPST) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Yee John D. · Director Grant (A) 25K
Owned 25K Trade date Jun 4, 2026 Filed date Jun 17, 2026
Yee John D. Director Grant (A) 25K 25K Jun 4, 2026 Jun 17, 2026
Richey William Drake · Director Grant (A) 25K
Owned 25K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Richey William Drake Director Grant (A) 25K 25K Jun 4, 2026 Jun 8, 2026
Trojanowski Justin · Officer Grant (A) 22K
Owned 22K Trade date Mar 31, 2026 Filed date Apr 2, 2026
Trojanowski Justin Officer Grant (A) 22K 22K Mar 31, 2026 Apr 2, 2026
Maestas Nicholas · CFO Grant (A) 140K
Owned 140K Trade date Mar 31, 2026 Filed date Apr 2, 2026
Maestas Nicholas CFO Grant (A) 140K 140K Mar 31, 2026 Apr 2, 2026
Angel Matthew · Director 2 operations +$1.0M
Price $2.16 Qty +463K Owned 231K Trade date Mar 24, 2026 Filed date Jun 23, 2026
Angel Matthew Director 2 operations $2.16 +463K +$1.0M 231K Mar 24, 2026 Jun 23, 2026
Angel Matthew · Director 2 operations 463K
Owned 231K Trade date Mar 24, 2026 Filed date Jun 23, 2026
Angel Matthew Director 2 operations 463K 231K Mar 24, 2026 Jun 23, 2026
Angel Matthew · Director, Officer, 10% Owner Grant (A) 270K
Owned 270K Trade date Feb 4, 2026 Filed date Feb 6, 2026
Angel Matthew Director, Officer, 10% Owner Grant (A) 270K 270K Feb 4, 2026 Feb 6, 2026
Simantov Ronit · Director Grant (A) 1K
Owned 1K Trade date Jan 27, 2026 Filed date Jan 28, 2026
Simantov Ronit Director Grant (A) 1K 1K Jan 27, 2026 Jan 28, 2026
Raab Michael · Director Grant (A) 1K
Owned 1K Trade date Jan 27, 2026 Filed date Jan 28, 2026
Raab Michael Director Grant (A) 1K 1K Jan 27, 2026 Jan 28, 2026
Nichol Geoffrey · Director Grant (A) 1K
Owned 1K Trade date Jan 27, 2026 Filed date Jan 28, 2026
Nichol Geoffrey Director Grant (A) 1K 1K Jan 27, 2026 Jan 28, 2026
Pellizzari Christine A. · Director Grant (A) 1K
Owned 1K Trade date Jan 27, 2026 Filed date Jan 28, 2026
Pellizzari Christine A. Director Grant (A) 1K 1K Jan 27, 2026 Jan 28, 2026
11 of 11

Tempest Therapeutics, Inc. (TPST) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Sabby Management, LLC 492K
% of shares outstanding 9.9% Filing date Jan 21, 2026
Sabby Management, LLC 492K 9.9% Jan 21, 2026
Versant Venture Capital Vi, L.P. 998K
% of shares outstanding 5.2% Filing date Feb 8, 2024
Versant Venture Capital Vi, L.P. 998K 5.2% Feb 8, 2024
Rock Springs Capital Management LP
% of shares outstanding 4.7% Filing date Jul 15, 2021
Rock Springs Capital Management LP 4.7% Jul 15, 2021
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Tempest Therapeutics, Inc. (TPST) ownership FAQ

Who owns TPST?

11 reporting institutions disclosed TPST position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.