683 Capital Management LLC - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
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Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-09-03
5:55 pm
Unchanged
2026-08-2713GRAINIER ACQ CORP UNIT 1
RNAQU
683 Capital Management LLC862,500
11.200%
0
(Unchanged)
Filing
History
2026-09-03
5:53 pm
Purchase
2026-08-2713GRAINIER ACQ CORP UNIT 1
RNAQU
683 Capital Management LLC862,500
11.200%
862,500increase
(New Position)
Filing
History
2026-08-12
11:13 am
Sale
2026-06-3013GPERCEPTIVE CAP SOLUTIONS CORP
PCSC
683 Capital Management LLC0
0.000%
-640,894decrease
(Position Closed)
Filing
History
2026-06-11
4:54 pm
Purchase
2026-06-0413GGOSSAMER BIO INC
GOSS
683 Capital Management LLC623,357
9.990%
506,716increase
(+434.42%)
Filing
History
2026-05-15
10:48 am
Sale
2026-03-3113GIMMUNIC INC
IMUX
683 Capital Management LLC474,200
3.400%
-275,800decrease
(-36.77%)
Filing
History
2026-05-15
10:26 am
Sale
2026-03-3113GMODULAR MED INC
MODD
683 Capital Management LLC259,240
4.670%
-16,665decrease
(-6.04%)
Filing
History
2026-05-15
10:25 am
Sale
2026-03-3113GMERSANA THERAPEUTICS INC N
MRSN
683 Capital Management LLC0
0.000%
-351,289decrease
(Position Closed)
Filing
History
2026-05-15
10:24 am
Purchase
2026-03-3113GFRACTYL HEALTH INC
GUTS
683 Capital Management LLC639,968
4.810%
46,218increase
(+7.78%)
Filing
History
2026-03-24
4:48 pm
Sale
2026-03-1813GGOSSAMER BIO INC
GOSS
683 Capital Management LLC116,641
3.900%
-37,500decrease
(-24.33%)
Filing
History
2026-03-10
4:56 pm
Purchase
2026-03-0313GMODULAR MED INC
MODD
683 Capital Management LLC275,905
5.520%
213,596increase
(+342.80%)
Filing
History
2026-03-02
11:57 am
Purchase
2026-02-2313GGOSSAMER BIO INC
GOSS
683 Capital Management LLC154,141
5.230%
154,141increase
(New Position)
Filing
History
2026-02-17
4:19 pm
Sale
2025-12-3113GREVIVA PHARMACEUTICALS HLDGS C
RVPH
683 Capital Management LLC174,625
3.000%
-97,125decrease
(-35.74%)
Filing
History
2026-02-17
4:18 pm
Sale
2025-12-3113GIMMUNIC INC
IMUX
683 Capital Management LLC750,000
5.900%
-313,445decrease
(-29.47%)
Filing
History
2026-02-17
10:09 am
Purchase
2025-12-3113GMERSANA THERAPEUTICS INC N
MRSN
683 Capital Management LLC351,289
7.030%
77,869increase
(+28.48%)
Filing
History
2026-02-17
10:08 am
Purchase
2025-12-3113GPERCEPTIVE CAP SOLUTIONS CORP
PCSC
683 Capital Management LLC640,894
7.190%
140,894increase
(+28.18%)
Filing
History
2026-01-06
5:38 pm
Purchase
2025-12-2913GMEREO BIOPHARMA GROUP PLC ADR
MREO
683 Capital Management LLC65,083,815
8.180%
65,083,815increase
(New Position)
Filing
History
2025-12-30
1:56 pm
Purchase
2025-12-2213GIN8BIO INC
INAB
683 Capital Management LLC770,445
7.860%
770,445increase
(New Position)
Filing
History
2025-11-24
5:12 pm
Purchase
2025-11-1713GMERSANA THERAPEUTICS INC N
MRSN
683 Capital Management LLC273,420
5.470%
273,420increase
(New Position)
Filing
History
2025-11-14
12:26 pm
Sale
2025-08-1413GMODULAR MED INC
MODD
683 Capital Management LLC62,309
3.300%
-12,424decrease
(-16.62%)
Filing
History
2025-11-14
12:24 pm
Sale
2025-07-0213GINSPIRED ENTMT INC
INSE
683 Capital Management LLC1,125,000
4.200%
-575,000decrease
(-33.82%)
Filing
History
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