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
2026-03-02
11:57 am
Purchase
2026-02-2313GGossamer Bio, Inc.
GOSS
683 Capital Management, LLC12,331,304
5.230%
12,331,304increase
(New Position)
Filing
History
2026-02-17
4:19 pm
Sale
2025-12-3113GReviva Pharmaceuticals Holdings, Inc.
RVPH
683 Capital Management, LLC3,492,500
3.000%
-1,942,500decrease
(-35.74%)
Filing
History
2026-02-17
4:18 pm
Sale
2025-12-3113GImmunic, Inc.
IMUX
683 Capital Management, LLC7,500,000
5.900%
-3,134,446decrease
(-29.47%)
Filing
History
2026-02-17
10:09 am
Purchase
2025-12-3113GMersana Therapeutics, Inc.
MRSN
683 Capital Management, LLC351,289
7.030%
77,869increase
(+28.48%)
Filing
History
2026-02-17
10:08 am
Purchase
2025-12-3113GPerceptive Capital Solutions Corp Class A Ordinary Shares
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
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.
MRSN
683 Capital Management, LLC273,420
5.470%
273,420increase
(New Position)
Filing
History
2025-11-14
12:26 pm
Sale
2025-08-1413GModular Medical, Inc.
MODD
683 Capital Management, LLC1,869,259
3.300%
-372,740decrease
(-16.63%)
Filing
History
2025-11-14
12:24 pm
Sale
2025-07-0213GInspired Entertainment, Inc.
INSE
683 Capital Management, LLC1,125,000
4.200%
-575,000decrease
(-33.82%)
Filing
History
2025-10-14
4:42 pm
Purchase
2025-10-1013GFractyl Health, Inc. Common Stock
GUTS
683 Capital Management, LLC7,125,000
5.330%
7,125,000increase
(New Position)
Filing
History
2025-09-29
6:59 pm
Purchase
2025-09-2213GReviva Pharmaceuticals Holdings, Inc.
RVPH
683 Capital Management, LLC5,435,000
5.360%
5,435,000increase
(New Position)
Filing
History
2025-08-08
4:05 pm
Purchase
2025-08-0213GImmunic, Inc.
IMUX
683 Capital Management, LLC10,634,446
9.900%
10,634,446increase
(New Position)
Filing
History
2025-02-14
08:18 am
Purchase
2024-12-3113GModular Medical, Inc.
MODD
683 Capital Management, LLC2,241,999
6.400%
30,000increase
(+1.36%)
Filing
History
2025-02-14
08:18 am
Sale
2024-12-3113GInspired Entertainment, Inc.
INSE
683 Capital Management, LLC1,700,000
6.400%
-125,000decrease
(-6.85%)
Filing
History
2025-02-14
08:18 am
Sale
2024-12-3113GAFFIMED N V NE
AFMDQ
683 Capital Management, LLC654,600
4.300%
-270,000decrease
(-29.20%)
Filing
History
2024-11-15
2:15 pm
Sale
2024-11-1313GCactus Acquisition Corp. 1 Limited
CCTS
683 Capital Management, LLC0
0.000%
-450,000decrease
(Position Closed)
Filing
History
2024-10-24
2:49 pm
Purchase
2024-10-1413GAFFIMED N V NE
AFMDQ
683 Capital Management, LLC924,600
6.100%
924,600increase
(New Position)
Filing
History
2024-06-24
3:07 pm
Purchase
2024-06-1213GPerceptive Capital Solutions Corp Class A Ordinary Shares
PCSC
683 Capital Management, LLC500,000
5.600%
500,000increase
(New Position)
Filing
History
2024-03-01
3:48 pm
Purchase
2024-02-1613GModular Medical, Inc.
MODD
683 Capital Management, LLC2,211,999
6.990%
2,211,999increase
(New Position)
Filing
History
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