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iTeos Therapeutics, Inc. (ITOS) institutional ownership

Market cap$386M SectorHealthcare
Funds holding · Q4 2025
2
reported ITOS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q4 2025
Activity unavailable N/A
0 buyers · 2 sellers

iTeos Therapeutics, Inc. (ITOS) price and institutional activity

Dates

Q4 2025

$0 bought by 0 investors
$0 sold by 2 investors
Barclays PLCIfp Advisors, Inc
Bought Sold Totals per quarter; hover a bar for the names.

iTeos Therapeutics, Inc. (ITOS) institutional activity · 2

Investor Type Est. change Change Δ Own Date
Barclays PLC · Exited
Change −113K Δ Own −100.0% Date Q4 2025
Barclays PLC Exited· Q4 2025 −113K −100.0% Q4 2025
Ifp Advisors, Inc · Exited
Change −232 Δ Own −100.0% Date Q4 2025
Ifp Advisors, Inc Exited· Q4 2025 −232 −100.0% Q4 2025
Data through Q4 2025 · filed Mar 19, 2026
2 of 2

Famous investor activity in iTeos Therapeutics, Inc. (ITOS)

iTeos Therapeutics, Inc. (ITOS) 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
Feltquate David · Officer Other Form 4 events -47K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Feltquate David Officer Other Form 4 events -47K 0 Aug 29, 2025 Aug 29, 2025
Gall Matthew · CFO Other Form 4 events -89K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Gall Matthew CFO Other Form 4 events -89K 0 Aug 29, 2025 Aug 29, 2025
Gall Matthew · CFO 5 operations -448K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Gall Matthew CFO 5 operations -448K 0 Aug 29, 2025 Aug 29, 2025
Call Matthew · Officer Other Form 4 events -162K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Call Matthew Officer Other Form 4 events -162K 0 Aug 29, 2025 Aug 29, 2025
Call Matthew · Officer 6 operations -417K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Call Matthew Officer 6 operations -417K 0 Aug 29, 2025 Aug 29, 2025
Detheux Michel · Director, Officer 2 operations -248K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Detheux Michel Director, Officer 2 operations -248K 0 Aug 29, 2025 Aug 29, 2025
Detheux Michel · Director, Officer 7 operations -859K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Detheux Michel Director, Officer 7 operations -859K 0 Aug 29, 2025 Aug 29, 2025
Lee David K. · Director 2 operations -45K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Lee David K. Director 2 operations -45K 0 Aug 29, 2025 Aug 29, 2025
McGrath Yvonne · Officer Other Form 4 events -46K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
McGrath Yvonne Officer Other Form 4 events -46K 0 Aug 29, 2025 Aug 29, 2025
McGrath Yvonne · Officer 3 operations -176K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
McGrath Yvonne Officer 3 operations -176K 0 Aug 29, 2025 Aug 29, 2025
Rhoads Ann D. · Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -27K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Rhoads Ann D. Director Shares transferred outside the market (D), often for tax or as a gift, not a market sale -27K 0 Aug 29, 2025 Aug 29, 2025
Hallal David · Director 2 operations -171K
Owned 0 Trade date Aug 29, 2025 Filed date Aug 29, 2025
Hallal David Director 2 operations -171K 0 Aug 29, 2025 Aug 29, 2025
12 of 12

iTeos Therapeutics, Inc. (ITOS) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 4.3M
% of shares outstanding 11.9% Filing date Jan 23, 2024
BlackRock Inc. 4.3M 11.9% Jan 23, 2024
Blackrock, Inc. 3.9M
% of shares outstanding 10.6% Filing date Nov 8, 2024
Blackrock, Inc. 3.9M 10.6% Nov 8, 2024
Ra Capital Management, L.P. 3.7M
% of shares outstanding 10.0% Filing date May 14, 2024
Ra Capital Management, L.P. 3.7M 10.0% May 14, 2024
Tang Capital Management LLC 2.4M
% of shares outstanding 6.6% Filing date Sep 30, 2024
Tang Capital Management LLC 2.4M 6.6% Sep 30, 2024
Ecor1 Capital, LLC 1.6M
% of shares outstanding 4.4% Filing date Nov 14, 2024
Ecor1 Capital, LLC 1.6M 4.4% Nov 14, 2024
Vanguard Group Inc 1.5M
% of shares outstanding 4.2% Filing date Feb 13, 2024
Vanguard Group Inc 1.5M 4.2% Feb 13, 2024
Biotechnology Value Fund L P 1.2M
% of shares outstanding 3.3% Filing date Nov 21, 2024
Biotechnology Value Fund L P 1.2M 3.3% Nov 21, 2024
Boxer Capital Management, LLC 1.0M
% of shares outstanding 2.8% Filing date Nov 18, 2024
Boxer Capital Management, LLC 1.0M 2.8% Nov 18, 2024
8 of 13

iTeos Therapeutics, Inc. (ITOS) ownership FAQ

Who owns ITOS?

2 reporting institutions disclosed ITOS position changes in the Q4 2025 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 Q4 2025.

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.