Starling Oncology, Inc.

STLN

Exchange: Nasdaq
Industry: Services-Offices & Clinics of Doctors of Medicine
SEC CIK: 0001799191

SEC filings (opens in a new tab)

In the last 90 days, Starling Oncology, Inc. insiders filed 3 open-market purchases and 2 sales; 119 institutions reported holding it in 13F filings for Q2 2026, worth $217.6M in total; no superinvestor holds it.

Other share classesDFPH STLNW

Q2 2026 vs. Q1 2026

How the institutions holding Starling Oncology, Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026 All holders in Q1 2026

13F holders of STLN: Q1 2026 compared with Q2 2026
Measure	Q1 2026	Of which not filed for Q2 2026	Q2 2026	Change
Holders	115	1	119	+5
Shares	38.8M	1.99K	40.1M	+1.33M (+3.4%)
Value	$118.9M	$6.12K	$217.6M	+$98.7M (+83.0%)

1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (26)

Institutions that held Starling Oncology, Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to STLN in Q2 2026
Institution	Shares	Value	% of portfolio
Acadian Asset Management LLC	567,001	$3.07M	0.00%
Manatuck Hill Partners, LLC	450,000	$2.44M	0.81%
Walleye Capital LLC	445,832	$2.42M	0.01%
CWM Advisors, LLC	424,008	$2.30M	0.09%
Formula Growth Ltd	300,000	$1.63M	0.57%
EAM Investors, LLC	188,467	$1.02M	0.09%
Panoramic Capital, LLC	100,000	$543.0K	0.23%
Gsa Capital Partners LLP	98,727	$536.0K	0.03%
White Pine Capital LLC	85,618	$464.9K	0.11%
Allspring Global Investments Holdings, LLC	51,282	$278.5K	0.00%
Los Angeles Capital Management LLC	33,935	$184.3K	0.00%
Globeflex Capital L P	26,111	$141.8K	0.02%
Axq Capital, LP	22,460	$122.0K	0.01%
Franklin Resources Inc	22,177	$120.4K	0.00%
Winton Group Ltd	18,800	$102.1K	0.00%
Blackhawk Capital Partners LLC.	15,000	$81.5K	0.03%
Fermata Advisors, LLC	12,800	$69.5K	0.01%
FreeGulliver LLC	12,350	$67.1K	0.02%
Wealthspire Advisors, LLC	11,400	$61.9K	0.00%
Ameriprise Financial Inc	10,300	$55.9K	0.00%
Kemnay Advisory Services Inc.	8,592	$46.7K	0.01%
Federated Hermes, Inc.	3,322	$18.0K	0.00%
Miller Wealth Advisors, LLC	2,820	$15.3K	0.01%
SBI Securities Co., Ltd.	1,600	$8.69K	0.00%
Quarry LP	155	$842	0.00%
Hughes Financial Services, LLC	16	$87	0.00%

Sold out (21)

Institutions that held Starling Oncology, Inc. at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of STLN in Q2 2026
Institution	Shares, Q1 2026	Value, Q1 2026
Kanen Wealth Management LLC	2,777,858	$8.53M
Balyasny Asset Management LLC	1,826,370	$5.61M
Ensign Peak Advisors, Inc	626,852	$1.92M
Centiva Capital, LP	224,245	$688.4K
Tiff Advisory Services Inc	195,469	$564.9K
Susquehanna International Group, LLP	92,869	$285.1K
XTX Topco Ltd	90,346	$277.4K
Lee Financial Co	81,362	$249.8K
Aquatic Capital Management LLC	78,468	$240.9K
Rhumbline Advisers	77,845	$239.0K
WealthShield Partners, LLC	70,154	$215.4K
ADAR1 Capital Management, LLC	50,000	$153.5K
Graham Capital Management, L.P.	33,792	$103.7K
Schonfeld Strategic Advisors LLC	21,234	$65.2K
VestGen Advisors, LLC	12,000	$48.2K
Nine Masts Capital Ltd	14,018	$43.0K
Virtu Financial LLC	13,213	$41.0K
Quantbot Technologies LP	9,455	$29.0K
Group One Trading, L.P.	9,038	$27.7K
Twin Peaks Wealth Advisors, LLC	118	$362
Root Financial Partners, LLC	51	$157

Not filed for Q2 2026 yet (1)

Institutions that held Starling Oncology, Inc. at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding STLN in Q1 2026 that haven't filed for Q2 2026
Institution	Shares, Q1 2026	Value, Q1 2026
CWM, LLC	1,992	$6.12K