STTK · Shattuck Labs, Inc. · Shareholders & Ownership

$4.62 +0.13 (+2.90%) At close · Nov 6 Q3 2023 earnings call transcript

Russell 2000 member Rebalance outlook locked

Market Cap

$470.51M

101.84M

Volume · Nov 6 1.15M Avg daily vol (3M) 1.14M

Every disclosed holder of STTK in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns STTK

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	111	84,197,281	82.67%	Yes
Insiders (Forms 3, 4, 5)	8	10,051,556	9.87%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	7,593,715	7.46%	Rest
Registered funds (N-PORT, not summed)	123	22,293,299	21.89%	No

Shares outstanding: 101,842,552, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of STTK

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	13,432,540	13.19%	+3,566,982	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	T. Rowe Price Investment Management, Inc. 13G CIK 1897612 · Investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	13,432,540	13.19%	+3,566,982	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
2	Redmile Group, LLC 13D CIK 1425738 · Registered investment adviser · Jul 15, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	10,019,421	9.84%	+200,337	Jul 15, 2026	not summed
2.1	Redmile Group, LLC 13F CIK 1425738 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,892,033	6.77%	+1,352,309	Jun 30, 2026	carried, not yet filed for the newest quarter
2.2	Redmile Group, LLC Insider CIK 1425738 · Dec 4, 2024 10% Owner, issuer-wide, not summed	5,539,724	5.44%	-75,765	Dec 4, 2024	10% Owner, issuer-wide, not summed
3	ADAGE CAPITAL PARTNERS GP, L.L.C. 13F CIK 1165408 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,122,179	7.98%	+3,477,222	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Ashiya Mona Insider CIK 1794070 · Jun 11, 2026 Director, issuer-wide	6,306,127	6.19%	0	Jun 11, 2026	Director, issuer-wide
5	ORBIMED ADVISORS LLC 13F CIK 1055951 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,306,127	6.19%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	ORBIMED ADVISORS LLC Insider CIK 1055951 · Jun 11, 2026 10% Owner, issuer-wide, not summed	6,306,127	6.19%	0	Jun 11, 2026	10% Owner, issuer-wide, not summed
6	Prosight Management, LP 13F CIK 1617201 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	5,957,877	5.85%	+953,438	Jun 30, 2026	carried, not yet filed for the newest quarter
7	BlackRock, Inc. 13G CIK 2012383 · Holding company · Sep 30, 2026 Rule 13d-1(b), qualified institution, not summed	5,339,458	5.24%	+4,460,704	Sep 30, 2026	Rule 13d-1(b), qualified institution, not summed
7.1	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,935,810	3.86%	+3,425,004	Jun 30, 2026	carried, not yet filed for the newest quarter
7.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,538,564	1.51%	—	Jun 30, 2026	iShares Trust, not summed
7.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	501,709	0.49%	—	Jun 30, 2026	iShares Trust, not summed
7.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	206,111	0.20%	—	Jun 30, 2026	iShares Trust, not summed
7.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	114,668	0.11%	—	Jun 30, 2026	Quantitative Master Series LLC, not summed
8	Frazier Life Sciences Management, L.P. 13F CIK 1892134 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,750,000	3.68%	+3,750,000	Jun 30, 2026	carried, not yet filed for the newest quarter
9	NEXTBio Capital Management LP 13F CIK 2038158 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,727,348	3.66%	+577,441	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Deep Track Capital, LP 13F CIK 1856083 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,706,734	3.64%	+3,706,734	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,207,865	3.15%	+930,689	Jun 30, 2026	carried, not yet filed for the newest quarter
12	Schreiber Taylor Insider CIK 1601942 · May 12, 2026 Director, Chief Executive Officer, issuer-wide	2,732,972	2.68%	+25,610	May 12, 2026	Director, Chief Executive Officer, issuer-wide
13	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,641,076	2.59%	+858,288	Jun 30, 2026	carried, not yet filed for the newest quarter
13.1	T. Rowe Price Small-Cap Value Fund, Inc. Fund S000002121 · Registered fund · Jun 30, 2026 T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed	3,565,344	3.50%	+735,375	Jun 30, 2026	T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed
13.2	T. Rowe Price Small-Cap Stock Fund, Inc. Fund S000002120 · Registered fund · Jun 30, 2026 T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed	3,114,735	3.06%	+1,091,508	Jun 30, 2026	T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
13.3	T. Rowe Price Health Sciences Fund, Inc. Fund S000002088 · Registered fund · Jun 30, 2026 T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed	1,986,099	1.95%	+619,811	Jun 30, 2026	T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed
13.4	T. Rowe Price Institutional Small-Cap Stock Fund Fund S000002094 · Registered fund · Jun 30, 2026 T. Rowe Price Equity Funds, Inc., not summed	1,677,742	1.65%	+568,798	Jun 30, 2026	T. Rowe Price Equity Funds, Inc., not summed
13.5	T. Rowe Price Health Sciences Portfolio Fund S000002083 · Registered fund · Jun 30, 2026 T. ROWE PRICE EQUITY SERIES, INC., not summed	136,959	0.13%	+51,459	Jun 30, 2026	T. ROWE PRICE EQUITY SERIES, INC., not summed
14	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	2,366,616	2.32%	+775,509	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
15	PINNACLE ASSOCIATES LTD 13F CIK 743127 · Registered investment adviser · Sep 30, 2026	2,099,779	2.06%	+228,337	Sep 30, 2026
16	WELLINGTON MANAGEMENT GROUP LLP 13F CIK 902219 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,767,938	1.74%	+1,767,938	Jun 30, 2026	carried, not yet filed for the newest quarter
17	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,584,756	1.56%	+939,051	Jun 30, 2026	carried, not yet filed for the newest quarter
18	CLARK ESTATES INC/NY 13F CIK 1056466 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,430,167	1.40%	-45,481	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Aberdeen Group plc 13F CIK 1716774 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,405,851	1.38%	+246,530	Jun 30, 2026	carried, not yet filed for the newest quarter
20	abrdn Life Sciences Investors Fund · Registered fund · Jun 30, 2026 abrdn Life Sciences Investors, not summed	1,405,851	1.38%	—	Jun 30, 2026	abrdn Life Sciences Investors, not summed
21	Point72 Asset Management, L.P. 13F CIK 1603466 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,170,732	1.15%	+139,683	Jun 30, 2026	carried, not yet filed for the newest quarter
22	683 Capital Management, LLC 13F CIK 1404574 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,157,216	1.14%	+357,216	Jun 30, 2026	carried, not yet filed for the newest quarter
23	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,026,394	1.01%	+762,626	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	21,300	0.02%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
23.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	1,548	0.00%	—	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
24	Boxer Capital Management, LLC 13F CIK 2018299 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000,000	0.98%	+1,000,000	Jun 30, 2026	carried, not yet filed for the newest quarter
25	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	946,985	0.93%	+946,985	Jun 30, 2026	carried, not yet filed for the newest quarter
26	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	768,222	0.75%	+138,244	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
27	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	743,761	0.73%	+139,261	Jun 30, 2026	carried, not yet filed for the newest quarter
28	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	593,324	0.58%	+401,882	Jun 30, 2026	carried, not yet filed for the newest quarter
28.1	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · Aug 31, 2026 Goldman Sachs ETF Trust, not summed	82,138	0.08%	—	Aug 31, 2026	Goldman Sachs ETF Trust, not summed
28.2	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	27,732	0.03%	—	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
28.3	Multi-Manager U.S. Small Cap Equity Fund Fund S000051363 · Registered fund · Apr 30, 2026 Goldman Sachs Trust II, not summed	5,656	0.01%	—	Apr 30, 2026	Goldman Sachs Trust II, not summed
29	TD Asset Management Inc 13F CIK 1056053 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	558,876	0.55%	+176,228	Jun 30, 2026	carried, not yet filed for the newest quarter
30	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	520,316	0.51%	+394,255	Jun 30, 2026	carried, not yet filed for the newest quarter
30.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	31,584	0.03%	—	Jun 30, 2026	Northern Funds, not summed
30.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	3,786	0.00%	0	Jun 30, 2026	Northern Funds, not summed
31	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	463,415	0.46%	+138,827	Jun 30, 2026	carried, not yet filed for the newest quarter
32	S&G Foundation 13F CIK 1874163 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	435,749	0.43%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	ALGERT GLOBAL LLC 13F CIK 1275218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	421,187	0.41%	+135,115	Jun 30, 2026	carried, not yet filed for the newest quarter
34	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	392,596	0.39%	+96	Jun 30, 2026	carried, not yet filed for the newest quarter
34.1	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	671,918	0.66%	—	Jul 31, 2026	Fidelity Salem Street Trust, not summed
34.2	Select Biotechnology Portfolio Fund S000007486 · Registered fund · Aug 31, 2026 Fidelity Select Portfolios, not summed	391,662	0.38%	0	Aug 31, 2026	Fidelity Select Portfolios, not summed
34.3	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	325,063	0.32%	+40,746	Aug 31, 2026	Fidelity Concord Street Trust, not summed
34.4	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	125,547	0.12%	+26,410	Aug 31, 2026	Fidelity Concord Street Trust, not summed
34.5	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	103,601	0.10%	+19,632	Aug 31, 2026	Fidelity Concord Street Trust, not summed
35	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	356,528	0.35%	+161,755	Jun 30, 2026	carried, not yet filed for the newest quarter
35.1	DWS Small Cap Index VIP Fund S000006223 · Registered fund · Jun 30, 2026 DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed	9,616	0.01%	—	Jun 30, 2026	DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
36	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · Aug 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	351,449	0.35%	—	Aug 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
37	VANGUARD EXPLORER FUND Fund S000002578 · Registered fund · Jul 31, 2026 VANGUARD EXPLORER FUND, not summed	319,591	0.31%	—	Jul 31, 2026	VANGUARD EXPLORER FUND, not summed
38	SIEGALL CLAY B Insider CIK 1167496 · Jun 9, 2026 Director, issuer-wide	318,608	0.31%	+62,500	Jun 9, 2026	Director, issuer-wide
39	Neill Andrew R Insider CIK 1827204 · May 12, 2026 Chief Financial Officer, issuer-wide	292,251	0.29%	+64,027	May 12, 2026	Chief Financial Officer, issuer-wide
40	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	286,489	0.28%	+147,185	Jun 30, 2026	carried, not yet filed for the newest quarter
41	VANGUARD U.S. MOMENTUM FACTOR ETF Fund S000061302 · Registered fund · Aug 31, 2026 VANGUARD WELLINGTON FUND, not summed	282,326	0.28%	—	Aug 31, 2026	VANGUARD WELLINGTON FUND, not summed
42	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Sep 30, 2026	265,501	0.26%	+46,996	Sep 30, 2026
43	Hillsdale Investment Management Inc. 13F CIK 1368465 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	263,418	0.26%	+198,018	Jun 30, 2026	carried, not yet filed for the newest quarter
44	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	242,932	0.24%	+59,686	Jun 30, 2026	carried, not yet filed for the newest quarter
45	MANUFACTURERS LIFE INSURANCE COMPANY, THE 13F CIK 928047 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	227,071	0.22%	+84,771	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Small Cap Value Portfolio Fund S000000049 · Registered fund · Jun 30, 2026 NORTHWESTERN MUTUAL SERIES FUND INC, not summed	203,628	0.20%	+11,011	Jun 30, 2026	NORTHWESTERN MUTUAL SERIES FUND INC, not summed
47	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	194,008	0.19%	-569,737	Jun 30, 2026	carried, not yet filed for the newest quarter
48	West Tower Group, LLC 13F CIK 1965819 · Registered investment adviser · Sep 30, 2026	191,625	0.19%	0	Sep 30, 2026
49	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	189,899	0.19%	+149,018	Jun 30, 2026	carried, not yet filed for the newest quarter
49.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	149,008	0.15%	—	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
49.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	40,881	0.04%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
50	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	185,947	0.18%	-130,065	Jun 30, 2026	carried, not yet filed for the newest quarter

15 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 183 holders

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Key facts CIK 1680367 CUSIP 82024L103 13F (30d) 41 filings 29 filers Visit website Investor relations