Adam K. Stern - 16 Oct 2025 Form 4 Insider Report for Matinas BioPharma Holdings, Inc. (MTNB)

Reporting relationship
10%+ Owner
Issuer ticker
MTNB
Reported as of
16 Oct 2025
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
13 Aug 2026, 16:04:03 UTC
Prior SEC filing
15 Sep 2025
Next SEC filing
29 Jan 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Adam K. Stern

Key filing fact

Adam K. Stern filed Form 4 for Matinas BioPharma Holdings, Inc. (MTNB) on 13 Aug 2026.

Key facts

  • This page summarizes Adam K. Stern's Form 4 filing for Matinas BioPharma Holdings, Inc. (MTNB).
  • 11 reported transactions and 9 derivative rows are listed below.
  • Accepted by SEC: 13 Aug 2026, 16:04.

Change

  • Previous filing in this sequence was filed on 15 Sep 2025.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001403497 Primary reporting owner

STERN ADAM K

Relationship
10%+ Owner
Address
888 C 8TH AVE #530, NEW YORK
Signature
/s/ Adam K. Stern
Signature date
13 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MTNB transaction

Common Stock, par value $0.0001 per share

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
+92,100
Change %
+431%
Price
$0.6446*
Shares after
113,450
Date
31 Oct 2025
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Footnotes
F1, F2
MTNB transaction

Common Stock, par value $0.0001 per share

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
+344,710
Change %
+478%
Price
$0.3500*
Shares after
416,900
Date
10 Jul 2026
Ownership
Through A.K.S Family Partners LP
Footnotes
F2
MTNB transaction

Common Stock, par value $0.0001 per share

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
+630,335
Change %
+556%
Price
$0.3500*
Shares after
743,785
Date
10 Jul 2026
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Footnotes
F2
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
28,260
Date
16 Oct 2025
Ownership
Direct
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
26,500
Date
16 Oct 2025
Ownership
Through AKS Family Foundation
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
6,000
Date
16 Oct 2025
Ownership
Through Pavillion Capital Partners LLC
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
6,000
Date
16 Oct 2025
Ownership
Through Piper Venture Partners LLC
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,000
Date
16 Oct 2025
Ownership
Through IRA Adam K Stern - Rollover IRA
MTNB holding

Common Stock, par value $0.0001 per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
3,000
Date
16 Oct 2025
Ownership
Through Stern Aegis Ventures LLC 401k Plan for the Benefit of Adam K Stern

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MTNB transaction Derivative

Warrants to Purchase Common Stock

Other

Transaction value
Shares
+800,000
Change %
Price
$0.6446*
Shares after
800,000
Date
16 Oct 2025
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
800,000
Exercise price
$0.6446
Footnotes
F1
MTNB transaction Derivative

Series C Convertible Preferred Stock

Other

Transaction value
Shares
+265
Change %
Price
$0.5860*
Shares after
265
Date
16 Oct 2025
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
452,218
Exercise price
$0.5860
Footnotes
F1, F5
MTNB transaction Derivative

Warrants to Purchase Common Stock

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
-92,100
Change %
-13%
Price
$0.6446*
Shares after
630,335
Date
31 Oct 2025
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
92,100
Exercise price
$0.6446
Footnotes
F1
MTNB transaction Derivative

Warrants to Purchase Common Stock

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
-630,335
Change %
-100%
Price
$0.3500*
Shares after
0
Date
10 Jul 2026
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
630,335
Exercise price
$0.3500
Footnotes
F1, F2
MTNB transaction Derivative

Warrants to Purchase Common Stock

Award

Transaction value
Shares
+630,335
Change %
Price
$0.3500*
Shares after
630,335
Date
10 Jul 2026
Ownership
Through SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
630,335
Exercise price
$0.3500
Footnotes
F1, F2
MTNB transaction Derivative

Warrants to Purchase Common Stock

Exercise of in-the-money or at-the-money derivative security

Transaction value
Shares
-344,710
Change %
-100%
Price
$0.3500*
Shares after
0
Date
10 Jul 2026
Ownership
Through A.K.S Family Partners LP
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
344,710
Exercise price
$0.3500
Footnotes
F2, F4
MTNB transaction Derivative

Warrants to Purchase Common Stock

Award

Transaction value
Shares
+344,710
Change %
Price
$0.3500*
Shares after
344,710
Date
10 Jul 2026
Ownership
Through A.K.S Family Partners LP
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
344,710
Exercise price
$0.3500
Footnotes
F2, F4
MTNB transaction Derivative

Warrants to Purchase Common Stock

Other

Transaction value
Shares
+141,462
Change %
Price
$0.3500*
Shares after
141,462
Date
10 Jul 2026
Ownership
Direct
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
141,462
Exercise price
$0.3500
Footnotes
F3
MTNB holding Derivative

Series C Convertible Preferred Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
101
Date
16 Oct 2025
Ownership
Through AKS Family Partners
Underlying class
Common Stock, par value $0.0001 per share
Underlying amount
172,354
Exercise price
$0.5860
Footnotes
F4, F5
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Adam K. Stern is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 5 footnotes

Footnote F1

On October 16, 2025, SternAegis Ventures, LLC Defined Benefit Plan for the Benefit of Adam K Stern received 800,000 Warrants to purchase Common Stock and 265 shares of Series C Convertible Preferred Stock in connection with a settlement agreement.

Footnote F2

On July 10, 2026, the Registrant entered into inducement offer letter agreements with certain Reporting Persons, pursuant to which such Reporting Persons agreed to exercise for cash all of their outstanding warrants at the current exercise price of $0.35 per share in consideration for the Registrant's agreement to issue, in a private placement, new unregistered common stock purchase warrants (the "New Warrants"). The Registrant is required to obtain stockholder approval ("Inducement Stockholder Approval") for the issuance of the shares of common stock underlying the New Warrants. The New Warrants will be exercisable beginning on the date Inducement Stockholder Approval is received at an exercise price of $0.35 per share and will expire on the five-year anniversary of the date Inducement Stockholder Approval is received.

Footnote F3

On July 10, 2026, the Registrant issued warrants to purchase 374,330 shares of Common Stock (the "Solicitation Agent Warrants") to ThinkEquity LLC in connection with a Solicitation Agreement, dated June 25, 2026. The Solicitation Agent Warrants have terms substantially similar to the New Warrants, including with respect to exercise price, expiration and term. ThinkEquity LLC distributed 141,462 Solicitation Agent Warrants to Mr. Stern.

Footnote F4

On June 10, 2026, Sanitam Parnters LLC ("Sanitam") distributed its holdings in the Registrant's preferred stock and warrants to its members. A.K.S. Family Partners LP received a portion of such distribution. As such Sanitam no longer beneficially owns any securities of the Registrant.

Footnote F5

The Series C Convertible Preferred Stock of the Registrant is perpetual and has no expiration date.

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