MPLT · MapLight Therapeutics, Inc. · Shareholders & Ownership

$8.20 +0.04 (+0.49%)

Russell 2000 member Rebalance outlook locked

Market Cap

$378.44M

46.38M

Volume · Oct 22 104.27K Avg daily vol (3M) 810.26K

Every disclosed holder of MPLT 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 MPLT

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)	105	26,255,167	56.61%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	3	33,678,285	72.62%	Yes
Remaining	—	13,555,620	-29.23%	Negative
Registered funds (N-PORT, not summed)	139	6,896,979	14.87%	No

Shares outstanding: 46,377,832, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

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 MPLT

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	Catalyst4, Inc. 13D CIK 1900201 · Unknown · Aug 14, 2026 Item 4 purpose: Other	27,536,011	59.37%	+6,629,322	Aug 14, 2026
1.1	Catalyst4, Inc. Insider CIK 1900201 · Aug 14, 2026 10% Owner, issuer-wide, not summed	25,306,689	54.57%	+4,400,000	Aug 14, 2026	10% Owner, issuer-wide, not summed
2	FCPM III SERVICES B.V. 13F CIK 2013410 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,226,400	6.96%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
3	Forbion Growth Opportunities Fund III Cooperatief U.A. 13G CIK 2050895 · Unknown · Dec 31, 2025 Rule 13d-1(d), exempt investor	3,226,400	6.96%	—	Dec 31, 2025	Rule 13d-1(d), exempt investor
4	Nan Fung Group Holdings Limited 13G CIK 1857522 · Unknown · Aug 13, 2026 Rule 13d-1(c), passive investor	2,915,874	6.29%	—	Aug 13, 2026	Rule 13d-1(c), passive investor
5	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,781,728	6.00%	-20,209	Jun 30, 2026	carried, not yet filed for the newest quarter
6	NOVO HOLDINGS A/S 13D CIK 1388325 · Unknown · Jul 30, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands not summed	2,086,622	4.50%	-1,600,000	Jul 30, 2026	not summed
6.1	NOVO HOLDINGS A/S 13F CIK 1388325 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,686,622	7.95%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
6.2	Novo Holdings A/S Insider CIK 1388325 · Oct 28, 2025 10% Owner, issuer-wide, not summed	3,686,622	7.95%	—	Oct 28, 2025	10% Owner, issuer-wide, not summed
7	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,948,312	4.20%	-46,561	Jun 30, 2026	carried, not yet filed for the newest quarter
7.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	3,476	0.01%	+3,433	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
8	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,422,935	3.07%	+1,310,227	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	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	625,046	1.35%	-678	Jun 30, 2026	T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
8.2	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	605,601	1.31%	-15,727	Jun 30, 2026	T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed
8.3	T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund Fund S000002074 · Registered fund · Jun 30, 2026 T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed	402,792	0.87%	—	Jun 30, 2026	T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
8.4	T. Rowe Price New Horizons Fund, Inc. Fund S000002106 · Registered fund · Jun 30, 2026 T. ROWE PRICE NEW HORIZONS FUND, INC., not summed	398,809	0.86%	+351,906	Jun 30, 2026	T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
8.5	T. Rowe Price Institutional Small-Cap Stock Fund Fund S000002094 · Registered fund · Jun 30, 2026 T. Rowe Price Equity Funds, Inc., not summed	342,343	0.74%	0	Jun 30, 2026	T. Rowe Price Equity Funds, Inc., not summed
9	Kroeger Christopher A. Insider CIK 1658918 · Oct 15, 2026 Director, Chief Executive Officer, issuer-wide, not summed	1,297,099	2.80%	-73,691	Oct 15, 2026	Director, Chief Executive Officer, issuer-wide, not summed
10	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,025,134	2.21%	-314,597	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	267,770	0.58%	-195,071	Jun 30, 2026	iShares Trust, not summed
10.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	83,819	0.18%	+1,102	Jun 30, 2026	iShares Trust, not summed
10.3	BlackRock Health Sciences Opportunities Portfolio Fund S000001877 · Registered fund · May 29, 2026 BlackRock Funds, not summed	50,257	0.11%	—	May 29, 2026	BlackRock Funds, not summed
10.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	34,702	0.07%	-14,048	Jun 30, 2026	iShares Trust, not summed
10.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	19,495	0.04%	-9,085	Jun 30, 2026	Quantitative Master Series LLC, not summed
11	Nan Fung Group Holdings Ltd 13F CIK 1782539 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	971,253	2.09%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
12	5AM Venture Management, LLC 13F CIK 1799883 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	950,011	2.05%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
13	Sanofi 13F CIK 1121404 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	912,041	1.97%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
14	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	852,150	1.84%	+513,034	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	State Street(R) SPDR(R) S&P(R) Biotech ETF Fund S000010018 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	498,428	1.07%	—	Jun 30, 2026	SPDR SERIES TRUST, not summed
14.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	7,200	0.02%	+600	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	211	0.00%	-276	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
14.4	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	132	0.00%	—	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
15	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	823,556	1.78%	+619,055	Jun 30, 2026	carried, not yet filed for the newest quarter
15.1	Fidelity Stock Selector Small Cap Fund Fund S000005453 · Registered fund · Jul 31, 2026 Fidelity Capital Trust, not summed	406,402	0.88%	—	Jul 31, 2026	Fidelity Capital Trust, not summed
15.2	Fidelity Series Small Cap Opportunities Fund Fund S000015587 · Registered fund · Jul 31, 2026 Fidelity Securities Fund, not summed	263,529	0.57%	—	Jul 31, 2026	Fidelity Securities Fund, not summed
15.3	Fidelity Advisor Biotechnology Fund Fund S000005321 · Registered fund · Jul 31, 2026 Fidelity Advisor Series VII, not summed	202,900	0.44%	0	Jul 31, 2026	Fidelity Advisor Series VII, not summed
15.4	Fidelity Series Small Cap Core Fund Fund S000077859 · Registered fund · Jul 31, 2026 Fidelity Concord Street Trust, not summed	138,400	0.30%	—	Jul 31, 2026	Fidelity Concord Street Trust, not summed
15.5	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	114,415	0.25%	-77,197	Jul 31, 2026	Fidelity Salem Street Trust, not summed
16	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	784,150	1.69%	+64,330	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Blue Owl Capital Holdings LP 13F CIK 1858703 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	729,929	1.57%	-276,000	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Paradigm Biocapital Advisors LP 13F CIK 1855655 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	685,852	1.48%	+685,852	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Pivotal bioVenture Partners Investment Advisor LLC 13F CIK 1844645 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	611,446	1.32%	-1	Jun 30, 2026	carried, not yet filed for the newest quarter
20	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	552,279	1.19%	+73,700	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
21	Velan Capital Investment Management LP 13F CIK 1848809 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	492,893	1.06%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Siren, L.L.C. 13F CIK 2005245 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	450,000	0.97%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23	Capital World Investors 13F CIK 1422849 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	415,730	0.90%	+415,730	Jun 30, 2026	carried, not yet filed for the newest quarter
24	SMALLCAP World Fund Inc Fund S000009599 · Registered fund · Jun 30, 2026 SMALLCAP World Fund Inc, not summed	404,389	0.87%	—	Jun 30, 2026	SMALLCAP World Fund Inc, not summed
25	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	402,051	0.87%	-79,150	Jun 30, 2026	carried, not yet filed for the newest quarter
26	BAKER BROS. ADVISORS LP 13F CIK 1263508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	364,705	0.79%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Setia Vishwas Insider CIK 2021256 · May 6, 2026 Chief Financial Officer, issuer-wide, not summed	356,256	0.77%	-36,371	May 6, 2026	Chief Financial Officer, issuer-wide, not summed
28	Malenka Robert C. Insider CIK 2021198 · Apr 15, 2026 Director, issuer-wide, not summed	348,138	0.75%	-8,593	Apr 15, 2026	Director, issuer-wide, not summed
29	Foff Erin Pennock Insider CIK 2021233 · Oct 15, 2026 Chief Medical Officer, issuer-wide, not summed	296,906	0.64%	-15,355	Oct 15, 2026	Chief Medical Officer, issuer-wide, not summed
30	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	216,312	0.47%	-9,146	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
31	Lillie James Woodruff Insider CIK 1728746 · Oct 15, 2026 Chief Scientific Officer, issuer-wide, not summed	198,597	0.43%	-11,513	Oct 15, 2026	Chief Scientific Officer, issuer-wide, not summed
32	DAFNA Capital Management LLC 13F CIK 1389933 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	171,006	0.37%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	BNP PARIBAS ASSET MANAGEMENT Holding S.A. 13F CIK 1520354 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	170,862	0.37%	-96,884	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Freestone Grove Partners LP 13F CIK 2007591 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	168,912	0.36%	-145,045	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Kreitzer Anatol Insider CIK 2021238 · Oct 15, 2026 Chief Discovery Officer, issuer-wide, not summed	168,678	0.36%	-12,248	Oct 15, 2026	Chief Discovery Officer, issuer-wide, not summed
36	GILLIS JONATHAN Insider CIK 1709954 · Oct 15, 2026 CAAO and PAO, issuer-wide, not summed	142,315	0.31%	-10,167	Oct 15, 2026	CAAO and PAO, issuer-wide, not summed
37	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	136,818	0.30%	-24,328	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	94,698	0.20%	+19,782	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
37.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	25,379	0.05%	-17,132	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
37.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	11,837	0.03%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
37.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	10,329	0.02%	0	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
38	VANGUARD EXPLORER FUND Fund S000002578 · Registered fund · Jul 31, 2026 VANGUARD EXPLORER FUND, not summed	131,368	0.28%	—	Jul 31, 2026	VANGUARD EXPLORER FUND, not summed
39	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	128,841	0.28%	+128,841	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Hanson Kristopher Insider CIK 1789970 · Oct 15, 2026 General Counsel, issuer-wide, not summed	128,024	0.28%	-9,020	Oct 15, 2026	General Counsel, issuer-wide, not summed
41	SUPERSTRING CAPITAL MANAGEMENT LP 13F CIK 1931118 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	125,432	0.27%	-66,707	Jun 30, 2026	carried, not yet filed for the newest quarter
42	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	123,135	0.27%	-8,096	Jun 30, 2026	carried, not yet filed for the newest quarter
43	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	122,028	0.26%	-114,484	Jun 30, 2026	carried, not yet filed for the newest quarter
44	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	116,652	0.25%	-29,520	Jun 30, 2026	carried, not yet filed for the newest quarter
44.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	5,082	0.01%	-4,518	Jun 30, 2026	Northern Funds, not summed
44.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	3,895	0.01%	—	Jun 30, 2026	Northern Funds, not summed
45	STEMPOINT CAPITAL LP 13F CIK 1952142 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	106,906	0.23%	+6,906	Jun 30, 2026	carried, not yet filed for the newest quarter
46	SEVEN GRAND MANAGERS, LLC 13F CIK 1909126 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	100,000	0.22%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
47	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	99,384	0.21%	+15,936	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
48	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	96,761	0.21%	-15,843	Jun 30, 2026	carried, not yet filed for the newest quarter
49	LAZARD ASSET MANAGEMENT LLC 13F CIK 1207017 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	80,082	0.17%	-61,934	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Boxer Capital Management, LLC 13F CIK 2018299 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	75,000	0.16%	+75,000	Jun 30, 2026	carried, not yet filed for the newest quarter

29 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 193 holders

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Key facts CIK 1770069 CUSIP 56565P103 13F (30d) 6 filings 6 filers Visit website Investor relations