13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
ISSUER PROFILE · CIK 0001582554 · CUSIP 576810303

Matinas BioPharma Holdings, Inc.MTNB

2 13D/G filings 2 distinct filers 0 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d
0.0%
avg 0.0%
Median 60d
0.0%
avg 0.0%
Median 90d
0.0%
avg 0.0%
Median 180d
0.0%
avg 0.0%

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
2
1 SCHEDULE 13D/A · 1 SCHEDULE
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
1.00
as of 2026-08-31

13D/G Filings Timeline · 2 total

FiledFormFilerStakeSharesIntent
2026-08-13 SCHEDULE 13D/A Sanitam Partners LLC 9.99% 0 view →
2025-02-19 SCHEDULE 111 Equity Group 3.61% 183,639 view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-08-31 311,238 1.00 +39.0%
2026-08-14 223,898 1.00 -73.3%
2026-07-31 839,994 1.00 +77.3%
2026-07-15 473,657 1.00 +7658.5%
2026-06-30 6,105 1.00 -70.1%
2026-06-15 20,390 1.00 -70.4%
2026-05-29 68,896 1.00 +17702.6%
2026-05-15 387 1.00 -91.3%
2026-04-30 4,431 1.00 +26.4%
2026-04-15 3,507 1.00 -59.9%
2026-03-31 8,751 1.00 +21.8%
2026-03-13 7,185 1.00 +60.2%

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