Latest Period
Q1 2026
Security Snapshot
Matinas BioPharma Holdings, Inc. - COMMON STOCK, $0.0001 PAR VALUE PER SHARE (MTNB) Institutional Ownership
CUSIP: 576810303
13F Institutional Holders and Ownership History from Q3 2024 to Q2 2026
Institutions Reporting
28
Shares (Excl. Options)
354,364
Price
$0.50
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- Security type / class
- Equity / COMMON STOCK, $0.0001 PAR VALUE PER SHARE
- Symbol
- MTNB on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 354,364
- Total 13F value
- $177,274
- Portfolio coverage rank
- 0%
- Share change
- -88,113
- Value change
- -$50,754
- Number of holders
- 28
- Shares outstanding
- 13,694,843
- SEC-reported price per share
- $0.62
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MTNB - Matinas BioPharma Holdings, Inc. - COMMON STOCK, $0.0001 PAR VALUE PER SHARE is tracked under CUSIP 576810303.
- 28 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 28 to 2 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $177,274 to $20,170.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 28 institutions filings for Q1 2026.
Security key
576810303
Latest holder period
Q1 2026
13F holders
28
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
MTNB full holder history
Matinas BioPharma Holdings, Inc. SEC filings
Matinas BioPharma Holdings, Inc. company facts
Matinas BioPharma Holdings, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 576810303:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
MTNB
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Sanitam Partners LLC | 10% | -59% | $10,262,939 | +$9,526,394 | 17,104,899 | +1293% | STERN ADAM K | 08 Apr 2025 |
| Pembroke & Partners LLC | 10% | -50% | $10,137,427 | +$9,526,394 | 16,895,712 | +1559% | Robert J. Eide | 08 Apr 2025 |
| Hezbay Holdings LLC | 9.5% | +91% | $875,347 | +$705,273 | 1,306,488 | +415% | Hezbay Holdings LLC | 13 Jul 2026 |
| Lazar David E. | 9.8% | $517,750 | 545,000 | Lazar David E. | 15 Aug 2025 | |||
| 111 Equity Group | 3.6% | -31% | $110,183 | -$47,617 | 183,639 | -30% | 111 Equity Group LLC | 13 Feb 2025 |
As of 31 Mar 2026, 28 institutional investors reported holding 354,364 shares of Matinas BioPharma Holdings, Inc. - COMMON STOCK, $0.0001 PAR VALUE PER SHARE (MTNB). This represents 2.6% of the company’s total 13,694,843 outstanding shares.
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
8
Latest
Q1 2026
Rows shown
1-8 of 8
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 32,485 | $20,170 | $0.61 | 2 | |
| 2026 Q1 | 354,364 | $177,274 | -$50,754 | $0.50 | 28 |
| 2025 Q4 | 442,485 | $260,280 | +$3,912 | $0.59 | 28 |
| 2025 Q3 | 330,108 | $617,696 | +$101,472 | $1.89 | 28 |
| 2025 Q2 | 276,386 | $254,142 | -$21,440 | $0.89 | 24 |
| 2025 Q1 | 320,149 | $166,481 | -$25,649 | $0.52 | 23 |
| 2024 Q4 | 369,473 | $194,080 | -$555,641 | $0.51 | 20 |
| 2024 Q3 | 535,167 | $1,894,530 | +$1,718,769 | $3.54 | 16 |