Security key
87164U508
Theriva Biologics, Inc. - Common stock (TOVX)
CUSIP: 87164U508
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common stock
- Total 13F shares
- 1,295,504
- Total 13F value
- $272,379
- Share change
- +858,452
- SEC-reported price per share
- $0.21
- Number of holders
- 20
- Value change
- +$158,821
- Number of buys
- 14
- Number of sells
- 10
- Shares outstanding
- 9,600,143
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
20
Top holders
10
TOVX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Theriva Biologics, Inc. SEC filings
Theriva Biologics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 87164U508
Recent filing periods:
Ownership snapshot
Top reported holders of TOVX - Theriva Biologics, Inc. - Common stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Jeffrey Matthew Gryga Irr...
Disclosed value leader
Jeffrey Matthew Gryga Irr...
Comparable rows
15/15
Latest evidence
24 Oct 2025
13D/G
13F
Lead comparable stake: 7.7%
13D/G row: Jeffrey Matthew Gryga Irrevocable Trust
Showing 1-6 of 15 holder rows.
Quick read
Jeffrey Matthew Gryga Irrevocable Trust leads the comparable SEC ownership view at 7.7%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Jeffrey Matthew Gryga Irrevocable Trust's linked filing trail.
Comparable ownership
Top 5
Jeffrey Matthew Gryga Irrevocable...
7.7%
Empery Asset Management, LP
5%
CVI Investments, Inc.
4.9%
Ikarian Capital, LLC
1.3%
TWO SIGMA INVESTMENTS, LP
0.64%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Jeffrey Matthew Gryga Irrevocable Trust |
13D/G
|
7.7%
|
$300,046
739,211 shares
|
$0 | 24 Oct 2025 |
| Empery Asset Management, LP |
13D/G
|
5%
|
$201,636
504,091 shares
|
-$179,638 | 30 Sep 2025 |
| CVI Investments, Inc. |
13D/G
|
4.9%
|
$206,052
146,136 shares
|
$0 | 31 Dec 2024 |
| Ikarian Capital, LLC |
13F
Company
|
1.3%
|
$48,625
120,031 shares
|
— | 30 Sep 2025 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
0.64%
|
$25,050
61,837 shares
|
— | 30 Sep 2025 |
| Virtu Financial LLC |
13F
Company
|
0.38%
|
$15,000
36,781 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
20
Shares
1,295,504
Rows available
20
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
18
Q4 2025 holders
20
Holder diff
2
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend