KRSA · Korsana Biosciences, Inc. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“Accordingly, we have concluded that substantial doubt exists about our ability to continue as a going concern.”View the 10-Q filed Aug 4, 2026
Every disclosed holder of KRSA 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.
Who Owns KRSA
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 471,203 | 70.46% |
| Insiders (Forms 3, 4, 5) | 1,146,154 | 171.38% |
| 13D/G-only blocks | 3,316,834 | 495.96% |
| Remaining | 4,265,427 | -637.81% |
| Registered funds (N-PORT, not summed) | 0 | 0.00% |
Shares outstanding: 668,764, 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 KRSA
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
FMR LLC
13G
CIK 315066 · Holding company · Sep 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,144,797 | ||
| 1.1 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
92,792 | ||
| 2 |
Wellington Biomedical Innovation Master Investors (Cayman) II, L.P.
13G
CIK 1903360 · Unknown · Sep 9, 2026
Rule 13d-1(c), passive investor
|
2,775,788 | ||
| 3 |
Fairmount Funds Management LLC
13D
CIK 1802528 · Registered investment adviser · Sep 8, 2026
not summed
|
1,300,533 | ||
| 3.1 |
|
313,222 | ||
| 4 |
Venrock Healthcare Capital Partners III, L.P.
13D
CIK 1738048 · Unknown · Sep 8, 2026
Item 4 purpose: Passive investment
not summed
|
650,325 | ||
| 5 |
|
649,941 | ||
| 6 |
|
457,304 | ||
| 7 |
Kalehua Capital Management LLC
13F
CIK 2106181 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
235,907 | ||
| 8 |
Peter M. Hecht
13D
CIK 1478485 · Unknown · Jul 16, 2026
Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands
not summed
|
130,034 | ||
| 8.1 |
|
130,037 | ||
| 9 |
Balyasny Asset Management L.P.
13F
CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
45,359 | ||
| 9.1 |
Balyasny Asset Management L.P.
13G
CIK 1218710 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
45,359 | ||
| 10 |
ADAR1 Capital Management, LLC
13F
CIK 1940272 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
42,680 | ||
| 10.1 |
ADAR1 Capital Management, LLC
13G
CIK 1940272 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
42,680 | ||
| 11 |
|
29,629 | ||
| 12 |
J. Wood Capital Advisors LLC
13G
CIK 1586446 · Unknown · Sep 30, 2026
Rule 13d-1(c), passive investor
|
25,974 | ||
| 13 |
BRAIDWELL LP
13F
CIK 1920938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
22,413 | ||
| 14 |
TYNDALL CAPITAL PARTNERS L P
13G
CIK 1219314 · Unknown · Jun 30, 2025
Rule 13d-1(c), passive investor
|
22,170 | ||
| 15 |
American Endowment Foundation
13G
CIK 1802579 · Unknown · Dec 31, 2024
Rule 13d-1(d), exempt investor
|
19,004 | ||
| 16 |
Artal Participations S.a r.l
13G
CIK 1218180 · Unknown · Jul 12, 2024
Rule 13d-1(c), passive investor
|
16,594 | ||
| 17 |
|
15,360 | ||
| 18 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
8,542 | ||
| 19 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,550 | ||
| 20 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,416 | ||
| 21 |
|
4,391 | ||
| 22 |
|
3,574 | ||
| 23 |
Rangeley Capital, LLC
13F
CIK 1517796 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,473 | ||
| 24 |
HRT FINANCIAL LP
13F
CIK 1475597 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,151 | ||
| 25 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,400 | ||
| 26 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,675 | ||
| 27 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,050 | ||
| 28 |
|
448 | ||
| 29 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
264 | ||
| 30 |
GROUP ONE TRADING LLC
13F
CIK 932540 · Broker-dealer · Jun 30, 2026
carried, not yet filed for the newest quarter
|
27 | ||
| 31 |
OSAIC HOLDINGS, INC.
13F
CIK 1677044 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
19 | ||
| 32 |
Activest Wealth Management
13F
CIK 1883134 · Registered investment adviser · Sep 30, 2026
|
14 | ||
| 33 |
|
12 | ||
| 34 |
WHI TRUST Co LLC
13F
CIK 2013902 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10 | ||
| 35 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1 |
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.