Are insiders buying or selling Matinas BioPharma Holdings, Inc. stock?

Based on the last 50 SEC Form 4 filings, Matinas BioPharma Holdings, Inc. insiders made 6 open-market purchases and 0 open-market sales.

Where can I see Matinas BioPharma Holdings, Inc. insider trading activity?

SEC Form 4 filings for Matinas BioPharma Holdings, Inc. (MTNB) are publicly available on EDGAR and aggregated at form4api.com/companies/mtnb.

Company profile

Matinas BioPharma Holdings, Inc. Insider Trading

Name: Matinas BioPharma Holdings, Inc. Insider Trading Data
Creator: Form4API
License: https://www.sec.gov/privacy.htm

MTNB

Every SEC Form 4 insider trading filing for Matinas BioPharma Holdings, Inc. (MTNB) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange: NYSE
Sector: Pharmaceutical Preparations
CIK: 0001582554
Filings: 22
Insiders: 20
Last filing: 2026-07-10

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Activity summary

No insider transactions in the last 30 days. The most recent was on July 10, 2026, when Stern Adam K sold 344,710 shares. 22 filings from 20 insiders are on record below.

Quarterly balance

Buy and sell value by quarter, Q4 23 to Q3 26. Matinas BioPharma Holdings, Inc. insiders are net buyers across the period shown.

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $1.7M.

90 day insight

Over the last 90 days, Matinas BioPharma Holdings, Inc. insiders bought $341K across 2 transactions with no open-market sales.

Most active insider: Stern Adam K with 7 transactions totaling $1.1M.
Largest single purchase: $221K by Stern Adam K on Jul 10, 2026.

Activity skews bullish — buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	1d	1w	1m	3m	6m
Jul 10, 2026	Stern Adam K	MTNB	X	344,710	$0.35	$121K	+0.4%	-20.5%	—	—	—
Jul 10, 2026	Stern Adam K	MTNB	J	141,462	$0.35	$50K	+0.4%	-20.5%	—	—	—
Jul 10, 2026	Stern Adam K	MTNB	Award	344,710	$0.35	$121K	+0.4%	-20.5%	—	—	—
Jul 10, 2026	Stern Adam K	MTNB	X	344,710	$0.35	$121K	+0.4%	-20.5%	—	—	—
Jul 10, 2026	Stern Adam K	MTNB	Award	630,335	$0.35	$221K	+0.4%	-20.5%	—	—	—

31 more transactions hidden

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Top insiders

By total value filed.

Sanitam Partners LLC10% owner1 filing+$703K

Eide Robert JDirector1 filing+$492K

Pembroke & Partners LLC1 filing+$492K

Stern Adam K10% owner2 filings+$341K

Institutional Ownership

Top 13F-HR holders of Matinas BioPharma Holdings, Inc. as of 2026-06-30

↓ decreasing

Total reported AUM

$60,510

QoQ change

-63.9%

Reporting period

2026-06-30

BlackRock, Inc.

CIK 0002012383

$30,386

50K shares

Holos Integrated Wealth LLC

CIK 0002080096

$20,167

32K shares

State Street Corp

CIK 0000093751

$9,377

15K shares

Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →