GERN · Geron Corp · Shareholders & Ownership

$1.12 -0.01 (-0.88%) At close · Oct 23

Russell 2000 member Rebalance outlook locked

Market Cap

$719.57M

642.47M

Volume · Oct 23 11.23M Avg daily vol (3M) 9.92M

Every disclosed holder of GERN 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 GERN

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)	263	476,602,067	74.18%	Yes
Insiders (Forms 3, 4, 5)	7	517,288	0.08%	Yes
13D/G-only blocks	2	73,228,937	11.40%	Yes
Remaining	—	92,125,117	14.34%	Rest
Registered funds (N-PORT, not summed)	126	138,041,936	21.49%	No

Shares outstanding: 642,473,409, 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 GERN

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	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	49,115,571	7.64%	+1,795,792	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	14,478,730	2.25%	+1,148,397	Jun 30, 2026	iShares Trust, not summed
1.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	5,140,717	0.80%	+653,331	Jun 30, 2026	iShares Trust, not summed
1.3	iShares Biotechnology ETF Fund S000004350 · Registered fund · Jun 30, 2026 iShares Trust, not summed	4,426,859	0.69%	-86,244	Jun 30, 2026	iShares Trust, not summed
1.4	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	1,045,926	0.16%	+188,461	Jun 30, 2026	Quantitative Master Series LLC, not summed
1.5	iShares Core S&P Total U.S. Stock Market ETF Fund S000004317 · Registered fund · Jun 30, 2026 iShares Trust, not summed	720,548	0.11%	+17,136	Jun 30, 2026	iShares Trust, not summed
2	RA CAPITAL MANAGEMENT, L.P. 13F CIK 1346824 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,809,751	6.66%	-20,961,615	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	RA CAPITAL MANAGEMENT, L.P. 13G CIK 1346824 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(c), passive investor, not summed	66,502,728	10.35%	+2,514,622	Jun 30, 2026	Rule 13d-1(c), passive investor, not summed
3	Soleus Capital Management, L.P. 13F CIK 1802630 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	42,808,659	6.66%	+1,300,000	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Soleus Capital Master Fund, L.P. 13G CIK 1812275 · Unknown · Mar 31, 2026 Rule 13d-1(c), passive investor	41,508,659	6.46%	+8,500,000	Mar 31, 2026	Rule 13d-1(c), passive investor
5	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	35,856,671	5.58%	+5,359,488	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	STATE STREET CORP 13G CIK 93751 · Bank · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	35,856,671	5.58%	+10,231,065	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
5.2	State Street(R) SPDR(R) S&P(R) Biotech ETF Fund S000010018 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	21,816,987	3.40%	+5,203,294	Jun 30, 2026	SPDR SERIES TRUST, not summed
5.3	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	198,383	0.03%	+12,200	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
5.4	State Street(R) SPDR(R) Portfolio MSCI Global Stock Market ETF Fund S000036082 · Registered fund · Jun 30, 2026 SPDR INDEX SHARES FUNDS, not summed	34,632	0.01%	+4,131	Jun 30, 2026	SPDR INDEX SHARES FUNDS, not summed
5.5	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	13,060	0.00%	+416	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
6	Deep Track Capital, LP 13G CIK 1856083 · Investment adviser · Mar 31, 2026 Rule 13d-1(c), passive investor	31,720,278	4.94%	-790,993	Mar 31, 2026	Rule 13d-1(c), passive investor
7	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	29,038,928	4.52%	+7,462,359	Jun 30, 2026	carried, not yet filed for the newest quarter
8	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	27,250,215	4.24%	+581,186	Jun 30, 2026	carried, not yet filed for the newest quarter
9	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	20,449,234	3.18%	+394,700	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
10	Clearbridge Investments, LLC 13F CIK 1348883 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	19,648,853	3.06%	+28,533	Jun 30, 2026	carried, not yet filed for the newest quarter
11	Eversept Partners, LP 13F CIK 1697013 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	18,717,422	2.91%	-117,461	Jun 30, 2026	carried, not yet filed for the newest quarter
12	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	16,633,368	2.59%	+5,456,777	Jun 30, 2026	carried, not yet filed for the newest quarter
12.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	48,657	0.01%	+36,483	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
13	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	14,555,954	2.27%	+885,169	Jun 30, 2026	carried, not yet filed for the newest quarter
14	VANGUARD EXPLORER FUND Fund S000002578 · Registered fund · Jul 31, 2026 VANGUARD EXPLORER FUND, not summed	12,981,241	2.02%	+2,806,649	Jul 31, 2026	VANGUARD EXPLORER FUND, not summed
15	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	12,945,431	2.01%	+280,312	Jun 30, 2026	carried, not yet filed for the newest quarter
15.1	E*TRADE No Fee Total Market Index Fund Fund S000090722 · Registered fund · Jul 31, 2026 E Trade Trust, not summed	265	0.00%	0	Jul 31, 2026	E Trade Trust, not summed
16	Nantahala Capital Management, LLC 13F CIK 1472322 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	12,225,000	1.90%	+1,000,000	Jun 30, 2026	carried, not yet filed for the newest quarter
17	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10,812,598	1.68%	+6,143,815	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Vivo Capital, LLC 13F CIK 1674712 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,671,797	1.35%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
19	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,112,267	1.26%	+790,745	Jun 30, 2026	carried, not yet filed for the newest quarter
20	Kynam Capital Management, LP 13F CIK 1907884 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,836,318	1.06%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
21	ClearBridge Small Cap Growth Fund Fund S000016663 · Registered fund · Jul 31, 2026 Legg Mason Partners Investment Trust, not summed	6,316,110	0.98%	0	Jul 31, 2026	Legg Mason Partners Investment Trust, not summed
22	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	6,108,370	0.95%	+156,129	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
23	Candriam S.C.A. 13F CIK 1537014 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,589,182	0.87%	+1,667,706	Jun 30, 2026	carried, not yet filed for the newest quarter
24	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,502,807	0.86%	-1,094,349	Jun 30, 2026	carried, not yet filed for the newest quarter
24.1	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	6,100,057	0.95%	+704,650	Jul 31, 2026	Fidelity Salem Street Trust, not summed
24.2	Select Biotechnology Portfolio Fund S000007486 · Registered fund · May 31, 2026 Fidelity Select Portfolios, not summed	5,452,212	0.85%	-1,040,300	May 31, 2026	Fidelity Select Portfolios, not summed
24.3	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	2,794,804	0.44%	-31,388	May 31, 2026	Fidelity Concord Street Trust, not summed
24.4	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	993,179	0.15%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
24.5	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	819,834	0.13%	+21,176	May 31, 2026	Fidelity Concord Street Trust, not summed
25	Pale Fire Capital SE 13F CIK 1922318 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,307,204	0.83%	+418,900	Jun 30, 2026	carried, not yet filed for the newest quarter
26	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	5,032,212	0.78%	+169,948	Jun 30, 2026	carried, not yet filed for the newest quarter
26.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	282,815	0.04%	+37,470	Jun 30, 2026	Northern Funds, not summed
26.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	16,912	0.00%	-725	Jun 30, 2026	Northern Funds, not summed
26.3	FlexShares Morningstar US Market Factor Tilt Index Fund Fund S000033312 · Registered fund · Jul 31, 2026 FlexShares Trust, not summed	3,634	0.00%	-140,664	Jul 31, 2026	FlexShares Trust, not summed
27	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	4,896,096	0.76%	+1,202,763	Jun 30, 2026	carried, not yet filed for the newest quarter
28	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,579,000	0.71%	+2,779,479	Jun 30, 2026	carried, not yet filed for the newest quarter
29	SEGALL BRYANT & HAMILL, LLC 13F CIK 1006378 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,485,554	0.70%	-254,494	Jun 30, 2026	carried, not yet filed for the newest quarter
30	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,308,013	0.67%	+2,418,545	Jun 30, 2026	carried, not yet filed for the newest quarter
31	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,284,662	0.67%	-198,714	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	2,555,103	0.40%	-41,420	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
31.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	1,360,078	0.21%	+169,534	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
31.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	365,841	0.06%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
31.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	317,140	0.05%	+4,790	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
32	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	4,235,000	0.66%	+4,107,289	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Point72 Asset Management, L.P. 13F CIK 1603466 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,045,201	0.63%	-16,411,933	Jun 30, 2026	carried, not yet filed for the newest quarter
34	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,963,563	0.62%	+128,417	Jun 30, 2026	carried, not yet filed for the newest quarter
35	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	3,534,234	0.55%	-1,022,044	Jun 30, 2026	carried, not yet filed for the newest quarter
36	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	3,439,976	0.54%	-1,763,540	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	DWS Small Cap Index VIP Fund S000006223 · Registered fund · Jun 30, 2026 DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed	87,895	0.01%	+11,712	Jun 30, 2026	DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
37	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,361,584	0.52%	+1,915,725	Jun 30, 2026	carried, not yet filed for the newest quarter
38	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,939,469	0.46%	+2,578,624	Jun 30, 2026	carried, not yet filed for the newest quarter
39	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	2,804,965	0.44%	+98,553	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
40	ExodusPoint Capital Management, LP 13F CIK 1736225 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,526,145	0.39%	+2,514,158	Jun 30, 2026	carried, not yet filed for the newest quarter
41	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	2,416,441	0.38%	+1,989,743	Jun 30, 2026	carried, not yet filed for the newest quarter
42	EDMOND DE ROTHSCHILD HOLDING S.A. 13F CIK 1649647 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,330,000	0.36%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
43	NAN FUNG TRINITY (HK) LTD 13F CIK 1781880 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	2,223,550	0.35%	+850,000	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,618,246	0.25%	+78,010	Jun 30, 2026	carried, not yet filed for the newest quarter
45	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,547,239	0.24%	+297,222	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,546,476	0.24%	-1,385,013	Jun 30, 2026	carried, not yet filed for the newest quarter
46.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	743,863	0.12%	+84,920	Jul 31, 2026	TIAA-CREF Funds, not summed
46.2	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	738,777	0.12%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
46.3	TIAA Separate Account VA-1 - Stock Index Account Fund S000005098 · Registered fund · Jun 30, 2026 TIAA Separate Account VA-1, not summed	12,566	0.00%	0	Jun 30, 2026	TIAA Separate Account VA-1, not summed
46.4	Nuveen Life Stock Index Fund Fund S000005094 · Registered fund · Jun 30, 2026 TIAA-CREF Life Funds, not summed	7,738	0.00%	0	Jun 30, 2026	TIAA-CREF Life Funds, not summed
47	Hennion & Walsh Asset Management, Inc. 13F CIK 1861642 · Investment adviser · Sep 30, 2026	1,438,969	0.22%	+438,059	Sep 30, 2026
48	VANGUARD HEALTH CARE INDEX FUND Fund S000004450 · Registered fund · May 31, 2026 VANGUARD WORLD FUND, not summed	1,432,603	0.22%	-12,116	May 31, 2026	VANGUARD WORLD FUND, not summed
49	ClearBridge Variable Small Cap Growth Portfolio Fund S000017007 · Registered fund · Jun 30, 2026 Legg Mason Partners Variable Equity Trust, not summed	1,343,700	0.21%	0	Jun 30, 2026	Legg Mason Partners Variable Equity Trust, not summed
50	MOORE CAPITAL MANAGEMENT, LP 13F CIK 1448574 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,191,941	0.19%	+1,191,941	Jun 30, 2026	carried, not yet filed for the newest quarter

19 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 319 holders

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Key facts CIK 886744 CUSIP 374163103 13F (30d) 32 filings 32 filers Visit website Investor relations