Matinas BioPharma Holdings, Inc.
Matinas BioPharma Holdings, Inc. (MTNB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MTNB · as of Sep 30, 2025
Ownership Breakdown
28
Institutional Holders
▲ 4 vs Q2
$617,696
Total Inst. Value
▲ $363,554 vs Q2
5.55M
Shares Outstanding
freeFloat 78.89%
330,108
13F Shares Held
▲ 53,722 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MTNB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC pharmaceutical preparations | 59.7K | 1.17% | 1.17% | $112.88M | Nov 7, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 56.0K | 1.10% | 1.10% | $105.81M | Nov 12, 2025 | ▲ 476 |
BLACKROCK, INC. pharmaceutical preparations | 49.6K | 97.60% | 97.60% | $93.84M | Nov 12, 2025 | — held |
SARGENT INVESTMENT GROUP, LLC pharmaceutical preparations | 36.6K | 71.99% | 71.99% | $69.21M | Nov 14, 2025 | ▲ 1.0K |
HOLOS INTEGRATED WEALTH LLC pharmaceutical preparations | 32.5K | 63.85% | 63.85% | $55.54M | Jan 5, 2026 | — held |
RENAISSANCE TECHNOLOGIES LLC pharmaceutical preparations | 28.3K | 55.57% | 55.57% | $53.43M | Nov 13, 2025 | ▲ 3.6K |
NORTHERN TRUST CORP pharmaceutical preparations | 22.6K | 44.42% | 44.42% | $42.70M | Nov 14, 2025 | NEW |
STATE STREET CORP pharmaceutical preparations | 15.3K | 30.12% | 30.12% | $28.96M | Nov 14, 2025 | — held |
TWO SIGMA SECURITIES, LLC pharmaceutical preparations | 12.6K | 24.69% | 24.69% | $23.74M | Nov 14, 2025 | ▲ 12.6K |
HRT FINANCIAL LP pharmaceutical preparations | 10.8K | 21.20% | 21.20% | $20.00M | Nov 14, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
9
Increased
+18.9K shares4
New Positions
first time holders1
Decreased
−3 shares1
Sold Out
fully exitedNet shares change (top 50)
+18.9K
+18.9K / −3
Net new holders
+11
4 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MTNB insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
11
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
NEUGEBOREN EDWARD director | Apr 30, 2025 | Award | 11,600 | $0.59 | $6.8K | 11.6K | Form 4 ↗ |
Smith Robin L director | Apr 30, 2025 | Award | 11,600 | $0.59 | $6.8K | 11.6K | Form 4 ↗ |
D An Evelyn director | Apr 30, 2025 | Award | 11,600 | $0.59 | $6.8K | 11.6K | Form 4 ↗ |
Jabbour Jerome D President and CEO | Apr 30, 2025 | Award | 70,100 | $0.59 | $41.4K | 70.1K | Form 4 ↗ |
Murphy Keith director | Apr 30, 2025 | Award | 11,600 | $0.59 | $6.8K | 11.6K | Form 4 ↗ |
Sanitam Partners LLC 10 percent owner | Apr 8, 2025 | Purchase | 2,399,318 | $0.64 | $1.55M | 4.80M | Form 4 ↗ |
Sanitam Partners LLC 10 percent owner | Apr 8, 2025 | Purchase | 703 | $0.59 | $411.958 | 1.4K | Form 4 ↗ |
EIDE ROBERT J 10 percent owner | Apr 8, 2025 | Purchase | 1,679,182 | $0.64 | $1.08M | 3.36M | Form 4 ↗ |
EIDE ROBERT J 10 percent owner | Apr 8, 2025 | Purchase | 492 | $0.59 | $288.312 | 984 | Form 4 ↗ |
Pembroke & Partners LLC 10 percent owner | Apr 8, 2025 | Purchase | 1,679,182 | $0.64 | $1.08M | 3.36M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Matinas BioPharma Holdings, Inc. (MTNB) is primarily owned by institutional investors, who hold approximately 5.9% of total shares outstanding. Company insiders own approximately 21.11%, while retail and public investors account for the remaining 72.95%.
The largest institutional shareholder of Matinas BioPharma Holdings, Inc. is VANGUARD GROUP INC, holding approximately 59,725 shares — equal to 1.17% of outstanding shares — as of September 30, 2025.
A total of 28 institutional investors currently hold MTNB stock, with a combined institutional value of approximately $617,696 as of the most recent 13F filing period.
Frequently asked questions
MTNB ownershipMatinas BioPharma Holdings, Inc. (MTNB) is primarily owned by institutional investors, who hold approximately 5.9% of shares. The largest shareholder is VANGUARD GROUP INC with a 1.17% stake. Company insiders hold 21.11%. Data sourced from SEC Form 13F as of September 30, 2025.