FHTX · Foghorn Therapeutics Inc. · Shareholders & Ownership

$2.00 -0.01 (-0.50%) At close · Oct 23

Russell 2000 member Rebalance outlook locked

Market Cap

$118.77M

59.39M

Volume · Oct 23 486.83K Avg daily vol (3M) 689.14K

Every disclosed holder of FHTX 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 FHTX

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

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	103	44,923,878	75.65%	Yes
Insiders (Forms 3, 4, 5)	1	270,912	0.46%	Yes
13D/G-only blocks	4	25,117,040	42.30%	Yes
Remaining	—	10,926,515	-18.40%	Negative
Registered funds (N-PORT, not summed)	96	7,841,800	13.20%	No

Shares outstanding: 59,385,315, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

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 FHTX

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	Flagship Pioneering, LLC 13F CIK 1400240 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	12,674,120	21.34%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2	Flagship Ventures Fund V, L.P. 13D CIK 1627639 · Unknown · Jan 9, 2026	9,330,878	15.71%	-6,973,071	Jan 9, 2026
3	BIOTECHNOLOGY VALUE FUND L P 13G CIK 918923 · Unknown · Oct 1, 2026 Rule 13d-1(c), passive investor	8,507,000	14.33%	+2,640,387	Oct 1, 2026	Rule 13d-1(c), passive investor
4	BVF INC/IL 13F CIK 1056807 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	5,842,000	9.84%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	BVF PARTNERS L P/IL Insider CIK 1055947 · Oct 1, 2026 10% Owner, issuer-wide, not summed	619,258	1.04%	—	Oct 1, 2026	10% Owner, issuer-wide, not summed
5	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,705,958	9.61%	-341,240	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	Fidelity Growth Company Fund Fund S000007119 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	1,836,447	3.09%	0	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
5.2	Fidelity Growth Company K6 Fund Fund S000065696 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	501,007	0.84%	-6,537	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
5.3	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	396,371	0.67%	+55,678	Jul 31, 2026	Fidelity Salem Street Trust, not summed
5.4	Select Biotechnology Portfolio Fund S000007486 · Registered fund · May 31, 2026 Fidelity Select Portfolios, not summed	351,578	0.59%	-302,700	May 31, 2026	Fidelity Select Portfolios, not summed
5.5	Fidelity Series Growth Company Fund Fund S000042626 · Registered fund · May 31, 2026 Fidelity Mt. Vernon Street Trust, not summed	283,912	0.48%	-43,400	May 31, 2026	Fidelity Mt. Vernon Street Trust, not summed
6	Deerfield Management Company, L.P. 13G CIK 1352546 · Unknown · Mar 31, 2026 Rule 13d-1(c), passive investor	5,139,523	8.65%	+2,204,228	Mar 31, 2026	Rule 13d-1(c), passive investor
7	DEERFIELD MANAGEMENT COMPANY, L.P. 13F CIK 1009258 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,394,367	7.40%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
8	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,626,832	4.42%	+261,966	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	896,556	1.51%	+106,474	Jun 30, 2026	iShares Trust, not summed
8.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	342,513	0.58%	+156,129	Jun 30, 2026	iShares Trust, not summed
8.3	iShares Biotechnology ETF Fund S000004350 · Registered fund · Jun 30, 2026 iShares Trust, not summed	221,798	0.37%	-1,392	Jun 30, 2026	iShares Trust, not summed
8.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	122,329	0.21%	+34,099	Jun 30, 2026	iShares Trust, not summed
8.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	63,923	0.11%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
9	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,489,978	4.19%	-112,404	Jun 30, 2026	carried, not yet filed for the newest quarter
10	The Klarman Family Foundation 13G CIK 1843177 · Unknown · Sep 30, 2024 Rule 13d-1(d), exempt investor	2,139,639	3.60%	—	Sep 30, 2024	Rule 13d-1(d), exempt investor
11	Euclidean Capital LLC 13F CIK 1825034 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,573,761	2.65%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
12	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,494,611	2.52%	-478	Jun 30, 2026	carried, not yet filed for the newest quarter
13	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,027,071	1.73%	+990	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
14	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	910,866	1.53%	+62,694	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Siren, L.L.C. 13F CIK 2005245 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	720,720	1.21%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
16	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	697,469	1.17%	+17,682	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	12,800	0.02%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
16.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	763	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
16.3	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	385	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
17	AMERIPRISE FINANCIAL INC 13F CIK 820027 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	558,685	0.94%	+109,709	Jun 30, 2026	carried, not yet filed for the newest quarter
18	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	428,310	0.72%	-1,468	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
19	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	377,936	0.64%	-28,489	Jun 30, 2026	carried, not yet filed for the newest quarter
20	Candriam S.C.A. 13F CIK 1537014 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	313,765	0.53%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
21	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	309,775	0.52%	+33,900	Jun 30, 2026	carried, not yet filed for the newest quarter
21.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	19,208	0.03%	+733	Jun 30, 2026	Northern Funds, not summed
21.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	6,629	0.01%	-312	Jun 30, 2026	Northern Funds, not summed
22	JACOBS LEVY EQUITY MANAGEMENT, INC 13F CIK 884414 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	305,434	0.51%	+1,677	Jun 30, 2026	carried, not yet filed for the newest quarter
23	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	304,432	0.51%	+48,501	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Birchview Capital, LP 13F CIK 1618205 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	281,937	0.47%	+207	Jun 30, 2026	carried, not yet filed for the newest quarter
25	GOTTSCHALK ADRIAN Insider CIK 1828724 · Apr 10, 2026 Director, Chief Executive Officer, issuer-wide	270,912	0.46%	—	Apr 10, 2026	Director, Chief Executive Officer, issuer-wide
26	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	264,422	0.45%	+23,836	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	203,296	0.34%	+122,018	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Woodline Partners LP 13F CIK 1784547 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	202,145	0.34%	+21,812	Jun 30, 2026	carried, not yet filed for the newest quarter
29	B Group, Inc. 13F CIK 2043476 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	0.34%	+98,000	Jun 30, 2026	carried, not yet filed for the newest quarter
30	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	175,973	0.30%	+11,620	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
31	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	175,406	0.30%	+60,343	Jun 30, 2026	carried, not yet filed for the newest quarter
32	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	164,256	0.28%	+28,148	Jun 30, 2026	carried, not yet filed for the newest quarter
32.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	43,473	0.07%	+22,345	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
33	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	158,822	0.27%	-41,191	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	130,346	0.22%	+26,603	Jun 30, 2026	carried, not yet filed for the newest quarter
35	DAFNA Capital Management LLC 13F CIK 1389933 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	111,859	0.19%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
36	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	109,781	0.18%	+6,256	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	87,961	0.15%	+14,459	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
36.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	30,000	0.05%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
37	SCS Capital Management LLC 13F CIK 1303159 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	106,980	0.18%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
38	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	92,096	0.16%	-6,380	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Palumbo Wealth Management LLC 13F CIK 1846310 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	91,739	0.15%	+91,739	Jun 30, 2026	carried, not yet filed for the newest quarter
40	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	89,600	0.15%	+15,000	Jun 30, 2026	carried, not yet filed for the newest quarter
40.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	83,000	0.14%	+15,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
41	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	79,355	0.13%	-204	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Invesco Ltd. 13F CIK 914208 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	78,135	0.13%	+60,399	Jun 30, 2026	carried, not yet filed for the newest quarter
42.1	Invesco RAFI US 1500 Small-Mid ETF Fund S000013120 · Registered fund · Jul 31, 2026 Invesco Exchange-Traded Fund Trust, not summed	10,814	0.02%	+4,265	Jul 31, 2026	Invesco Exchange-Traded Fund Trust, not summed
42.2	Invesco Nasdaq Biotechnology ETF Fund S000072469 · Registered fund · May 31, 2026 Invesco Exchange-Traded Fund Trust II, not summed	3,081	0.01%	-77	May 31, 2026	Invesco Exchange-Traded Fund Trust II, not summed
43	DIADEMA PARTNERS LP 13F CIK 2026172 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	66,908	0.11%	-13,036	Jun 30, 2026	carried, not yet filed for the newest quarter
44	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	66,239	0.11%	+33,679	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	65,039	0.11%	+14,661	Jun 30, 2026	carried, not yet filed for the newest quarter
45.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	48,322	0.08%	+14,661	Jul 31, 2026	TIAA-CREF Funds, not summed
45.2	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	14,497	0.02%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
45.3	TIAA Separate Account VA-1 - Stock Index Account Fund S000005098 · Registered fund · Jun 30, 2026 TIAA Separate Account VA-1, not summed	505	0.00%	0	Jun 30, 2026	TIAA Separate Account VA-1, not summed
45.4	Nuveen Life Stock Index Fund Fund S000005094 · Registered fund · Jun 30, 2026 TIAA-CREF Life Funds, not summed	410	0.00%	0	Jun 30, 2026	TIAA-CREF Life Funds, not summed
46	Lynx1 Capital Management LP 13F CIK 1910456 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	61,588	0.10%	+61,588	Jun 30, 2026	carried, not yet filed for the newest quarter
47	STATE OF WISCONSIN INVESTMENT BOARD 13F CIK 854157 · Pension or benefit plan · Jun 30, 2026 carried, not yet filed for the newest quarter	58,094	0.10%	-7,551	Jun 30, 2026	carried, not yet filed for the newest quarter
48	SMALL COMPANY GROWTH PORTFOLIO Fund S000004394 · Registered fund · Jun 30, 2026 VANGUARD VARIABLE INSURANCE FUNDS, not summed	53,644	0.09%	0	Jun 30, 2026	VANGUARD VARIABLE INSURANCE FUNDS, not summed
49	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	53,509	0.09%	+23,957	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Verdad Advisers, LP 13F CIK 1812822 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	53,231	0.09%	+28,815	Jun 30, 2026	carried, not yet filed for the newest quarter

11 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 164 holders

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Key facts CIK 1822462 CUSIP 344174107 13F (30d) 9 filings 9 filers Visit website Investor relations