Matinas BioPharma Holdings, Inc. - Common Stock, $0.0001 par value per share (MTNB)

Q: What does CUSIP 576810303 represent in this 13F holders report?

CUSIP 576810303 is the security identifier for MTNB - Matinas BioPharma Holdings, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held MTNB - Matinas BioPharma Holdings, Inc. - Common Stock, $0.0001 par value per share in Q2 2026?

25 institutional investors reported MTNB - Matinas BioPharma Holdings, Inc. - Common Stock, $0.0001 par value per share for Q2 2026. Use the holders table for investor-level position and value details.

CUSIP: 576810303

Q2 2026 13F Holders as of 30 Jun 2026

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 325,055
Total 13F value: $199,232
Share change: -29,309
SEC-reported price per share: $0.61
Number of holders: 25
Value change: -$15,595
Number of buys: 7
Number of sells: 8
Shares outstanding: 13,694,843

Security key

576810303

Report period

Q2 2026

Institutions

Top holders

MTNB full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 Previous quarter: Q1 2026 Matinas BioPharma Holdings, Inc. SEC filings Matinas BioPharma Holdings, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 576810303

Newer quarter: Q3 2026 Previous quarter: Q1 2026

Recent filing periods:

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of MTNB - Matinas BioPharma Holdings, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Pembroke & Partners LLC

Disclosed value leader

Pembroke & Partners LLC

Comparable rows

3/15

Latest evidence

10 Jun 2026

13D/G 3/4/5 13F Lead comparable stake: 10% 12 rows are not safely comparable across share classes. 13D/G row: Pembroke & Partners LLC Showing 1-6 of 15 holder rows.

Quick read

Pembroke & Partners LLC leads the comparable SEC ownership view at 10%.

3 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Pembroke & Partners LLC's linked filing trail.

Comparable ownership Top 3

Pembroke & Partners LLC 10%

David E. Lazar 9.8%

111 Equity Group 3.6%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Pembroke & Partners LLC	13D/G 3/4/5 Robert J. Eide · 10%+ Owner 13D/G 3/4/5	10% Reported 13D/G · 08 Apr 2025	$10,137,427 16,895,712 shares	+$9,526,394	08 Apr 2025
David E. Lazar	13D/G Lazar David E. 13D/G	9.8% Reported 13D/G · 15 Aug 2025	$517,750 545,000 shares	$0	15 Aug 2025
111 Equity Group	13D/G 111 Equity Group LLC 13D/G	3.6% Reported 13D/G · 13 Feb 2025	$110,183 183,639 shares	-$47,617	13 Feb 2025
Adam K. Stern	3/4/5 10%+ Owner 3/4/5	— mixed-class rows	$591,092 2,559,005 shares mixed-class rows	—	16 Oct 2025
Sanitam Partners LLC	3/4/5 10%+ Owner 3/4/5	— denominator unverified	— 4,798,636 shares	—	10 Jun 2026
Robert J. Eide	3/4/5 10%+ Owner 3/4/5	— mixed-class rows	— 3,360,848 shares mixed-class rows	—	08 Apr 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

325,055

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2026 vs Q1 2026 Across Filers

Q1 2026 holders

Q2 2026 holders

Holder diff

-3

Investor	Q1 2026 Shares	Q2 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q2 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend