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SC Filed 2018-01-04 Event — SEC 0001535610-18-000006 →

SABBY MANAGEMENT, LLC → ARCA biopharma, Inc. ORKA

Stake: — Shares: —
Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 21/100
  • Passive Schedule 13G filer baseline
  • Elevated short days-to-cover (7.3 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
47 transactions
0 buys · 34 sales · 11 awards/exercises
Issuer Cluster
7 13D/G filings on this issuer
6 other filings besides this one
Filer Track Record
66 filings by this filer
65 other filings in the data moat
Short Interest · settle 2026-10-15
DTC 7.26
6,112,214 shares short · -21.4% vs prior

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-10-20 Quinlan Paul T officer Option exercise 9,000 $7.80 $70K
2026-10-20 Quinlan Paul T officer Sale 400 $74.90 $30K
2026-10-20 Quinlan Paul T officer Sale 500 $76.12 $38K
2026-10-20 Quinlan Paul T officer Sale 1,000 $77.20 $77K
2026-10-20 Quinlan Paul T officer Sale 4,100 $78.79 $323K
2026-10-20 Quinlan Paul T officer Sale 3,000 $79.49 $238K
2026-10-01 Klein Lawrence Otto director, officer Option exercise 25,000 $7.80 $195K
2026-10-01 Klein Lawrence Otto director, officer Sale 16,246 $83.40 $1.35M
2026-10-01 Klein Lawrence Otto director, officer Sale 8,554 $84.03 $719K
2026-10-01 Klein Lawrence Otto director, officer Sale 200 $84.78 $17K
2026-09-15 Goncalves Joana officer Option exercise 3,500 $6.84 $24K
2026-09-15 Goncalves Joana officer Option exercise 3,500 $7.80 $27K
2026-09-15 Goncalves Joana officer Sale 2,384 $91.10 $217K
2026-09-15 Goncalves Joana officer Sale 3,150 $92.03 $290K
2026-09-15 Goncalves Joana officer Sale 1,366 $92.99 $127K
2026-09-15 Goncalves Joana officer Sale 100 $94.22 $9K
2026-09-15 Goncalves Joana officer Sale 947 $95.71 $91K
2026-09-15 Agarwal Arjun officer Sale 560 $95.71 $54K
2026-09-15 Klein Lawrence Otto director, officer Sale 2,452 $95.71 $235K
2026-09-15 Quinlan Paul T officer Sale 1,039 $95.71 $99K
2026-09-15 Sandler Laura Lee officer Sale 906 $95.71 $87K
2026-09-11 Agarwal Arjun officer Option exercise 8,000 $12.50 $100K
2026-09-11 Agarwal Arjun officer Option exercise 1,459 $34.39 $50K
2026-09-11 Agarwal Arjun officer Sale 3,000 $91.11 $273K
2026-09-11 Agarwal Arjun officer Sale 4,051 $92.41 $374K
Showing 25 of 47

Other 13D/G Filings on ARCA biopharma, Inc.

FiledFormFilerStakeShares
2026-07-01 SCHEDULE 13D/A Fairmount Funds Management LLC 19.50% 14,553,895 view →
2025-03-10 SCHEDULE Fairmount Funds Management LLC 19.99% 8,511,824 view →
2022-07-08 SC Funicular Funds, LP — — view →
2022-04-14 SC Funicular Fund, LP — — view →
2022-04-04 SC Funicular Fund, LP — — view →
2018-03-05 SC Growth Equity Opportunities IV, LLC — — view →

Other Filings by SABBY MANAGEMENT, LLC

FiledFormIssuerStakeShares
2024-01-02 SC Bone Biologics Corp BBLGW — — view →
2024-01-02 SC Cocrystal Pharma, Inc. COCP — — view →
2024-01-02 SC AVENUE THERAPEUTICS, INC. ATXI — — view →
2024-01-02 SC Neptune Wellness Solutions Inc. — — view →
2024-01-02 SC RedHill Biopharma Ltd. RDHL — — view →
2024-01-02 SC Toughbuilt Industries, Inc — — view →
2024-01-02 SC Scinai Immunotherapeutics Ltd. SCNI — — view →
2024-01-02 SC Onconetix, Inc. ONCO — — view →
2024-01-02 SC Aditxt, Inc. ADTX — — view →
2024-01-02 SC Kiromic Biopharma, Inc. — — view →
2024-01-02 SC Virpax Pharmaceuticals, Inc. — — view →
2024-01-02 SC Huadi International Group Co., Ltd. HUDI — — view →
2024-01-02 SC Dogness (International) Corp DOGZ — — view →
2024-01-02 SC Pulmatrix, Inc. PULM — — view →
2024-01-02 SC Nisun International Enterprise Development Group Co., Ltd AIOS — — view →
2018-01-09 SC Axsome Therapeutics, Inc. AXSM — — view →
2018-01-09 SC CorMedix Inc. CRMD — — view →
2018-01-09 SC Onconova Therapeutics, Inc. TRAW — — view →
2018-01-09 SC BIOCEPT INC — — view →
2018-01-09 SC Trovagene, Inc. CRDF — — view →
Showing 20 of 65

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