Matinas BioPharma Holdings, Inc. (MTNB)
NYSE: MTNB · Pharmaceutical Preparations · Bedminster, NJ · filing with the SEC since 2013
Who owns Matinas BioPharma Holdings, Inc.
As filed with the SECHolders of 5% or more
4
Stern Adam K holds 9.99% of Common Stock, $0.0001 par value per share, as its SCHEDULE 13D/A filed Aug 13, 2026 says.
Directors and officers
4
report now, of 25 people on the record since 2017. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Stern Adam K
SCHEDULE 13D/A · filed Aug 13, 2026 · Common Stock, $0.0001 par value per share · 9.99% in Apr 10, 2025
Pembroke & Partners LLC
SCHEDULE 13D/A · filed Apr 10, 2025 · Common Stock, $0.0001 par value per share · 20% in Feb 21, 2025
Lazar David E.
SCHEDULE 13G · filed Aug 19, 2025 · Common Stock, par value $0.0001 per share
Hezbay Holdings LLC
SCHEDULE 13G · filed Jul 14, 2026 · COMMON STOCK, $0.0001 PAR VALUE PER SHARE · 4.99% in Sep 25, 2025
Chaim Herzog
SCHEDULE 13D/A · filed Feb 19, 2025 · Common Stock · reported falling below 5%, from 5.17% in Jan 6, 2025
Highbridge Capital Management, LLC
SCHEDULE 13G/A · filed Nov 14, 2025 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 8.4% in Aug 14, 2025
What MTNB reports owning in othersstakes of 5% or more, and other ties
2 subsidiaries in 1 country, from the list filed with the 10-K filed Mar 31, 2026.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 9, 2025 to Nov 9, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2020 runs to Nov 9, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window
No one on the roster filed an open-market trade in the window.