Starling Oncology, Inc.
DFPH- Exchange
- OTC
- Industry
- Services-Offices & Clinics of Doctors of Medicine
- SEC CIK
- 0001799191
In the last 90 days, Starling Oncology, Inc. insiders filed 3 open-market purchases and 2 sales; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of DFPH
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Starling Oncology, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| M33 Growth I L.P. | 13D/A | 5.46%6.80M shares | −4.33 ppfrom 9.79% | Mar 28, 20253 filings | Nov 20, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Starling Oncology, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 20, 20254:01 PM ET | M33 Growth I L.P.and 2 others | 13D/A | 5.46%6.80M shares | −4.33 ppfrom 9.79% | Nov 18, 2025 | SEC |
| Sep 5, 20254:05 PM ET | M33 Growth I L.P.and 2 others | 13D/A | 9.79%9.29M shares | −10.20 ppfrom 19.99% | Sep 4, 2025 | SEC |
| Mar 28, 20258:55 PM ET | M33 Growth I L.P.and 2 others | 13D/A | 19.99%17.5M shares | – | Mar 26, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Starling Oncology, Inc. shares.
No Form 144 notices for Starling Oncology, Inc. are on file.