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Theriva Biologics (TOVX)

Theriva Biologics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE.

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1.8M

Short interest

settlement 2026-10-15

3.3

Days to cover

-0.6 days vs prior

49.5%

Short share of volume

2026-11-02

93,707

Fails to deliver

settlement 2026-10-13

Wed 11 Nov

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-02.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in TOVX is 1,846,818 shares, up 257,314 shares over the last month. Over the last 48 readings it ranged from 70,210 shares (14 March 2025) to 12,169,782 shares (31 December 2025). At the reported average volume of 561K shares a day that is 3.3 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-151,846,818+7.8%560,6823.29
2026-09-301,712,533+7.7%439,2683.90
2026-09-151,589,504-9.9%508,0603.13
2026-08-311,764,062+2.7%577,6333.05
2026-08-141,716,998-18.9%528,8713.25
2026-07-312,115,924-9.4%500,9534.22
2026-07-152,336,498+60.9%4,499,7701.00
2026-06-301,452,613-51.0%1,062,7561.37
2026-06-152,962,839+8.8%28,293,9821.00
2026-05-292,723,844-32.9%1,626,7001.67
2026-05-154,060,180-52.3%3,052,2401.33
2026-04-308,509,923+234.4%79,730,8431.00
2026-04-152,544,706-62.9%5,342,2981.00
2026-03-316,863,897+25.3%27,762,7231.00
2026-03-135,476,214-10.5%1,547,5003.54
2026-02-276,118,308+8.6%35,686,9111.00
2026-02-135,635,008-25.8%1,888,1342.98
2026-01-307,592,849+30.2%2,351,9343.23
2026-01-155,829,836-52.1%3,983,8341.46
2025-12-3112,169,782+140.4%16,572,1231.00
2025-12-155,061,825+104.2%2,968,0191.71
2025-11-282,479,067+18.9%2,355,4921.05
2025-11-142,084,562+5.0%2,459,4051.00
2025-10-311,985,894+411.8%55,905,1571.00
2025-10-15387,988+61.7%20,136,5861.00
2025-09-30239,896-27.6%263,9951.00
2025-09-15331,552-33.5%333,2831.00
2025-08-29498,199+47.3%566,2001.00
2025-08-15338,125+269.0%1,421,5471.00
2025-07-3191,623-30.0%368,3251.00
2025-07-15130,891+37.5%211,6481.00
2025-06-3095,184-61.8%149,6811.00
2025-06-13249,351+157.4%2,977,8991.00
2025-05-3096,884-43.9%384,6831.00
2025-05-15172,674+133.5%4,773,9631.00
2025-04-3073,952-23.5%16,4194.50
2025-04-1596,649+22.3%28,3223.41
2025-03-3179,024+12.6%17,3334.56
2025-03-1470,210-16.9%31,6052.22
2025-02-2884,476-49.6%36,4172.32
2025-02-14167,482-36.1%190,7541.00
2025-01-31262,097-13.7%92,0282.85
2025-01-15303,683+11.1%452,5221.00
2024-12-31273,457+108.2%1,761,2191.00
2024-12-13131,353+66.5%138,6461.00
2024-11-2978,909-23.6%81,2571.00
2024-11-15103,322+13.6%8,306,3051.00
2024-10-3190,953+15.1%410,2631.00

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of TOVX volume is 49.5%, down 11.5 points over the last five sessions. Over the last 30 readings it ranged from 22.4% (8 October 2026) to 83.0% (23 October 2026). The latest reading is in line with the 30-session average of 50.2%, on 6.3M shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-023.1M6.3M49.5%449,677
2026-10-30363K1.1M34.4%33,519
2026-10-29167K326K51.2%0
2026-10-2877K130K59.3%0
2026-10-27143K417K34.2%0
2026-10-26182K298K61.1%5,888
2026-10-23207K250K83.0%0
2026-10-22242K413K58.6%0
2026-10-21123K408K30.2%14,000
2026-10-2097K175K55.5%0
2026-10-1959K131K45.4%0
2026-10-1685K139K61.0%18,520
2026-10-1574K187K39.5%9,608
2026-10-14131K222K59.3%0
2026-10-1349K190K25.8%50
2026-10-12371K670K55.3%5,166
2026-10-09176K227K77.4%650
2026-10-0876K341K22.4%0
2026-10-07183K325K56.3%0
2026-10-06142K230K61.6%0
2026-10-0566K196K33.9%0
2026-10-0279K209K38.0%15
2026-10-0151K180K28.3%0
2026-09-30209K446K46.9%21
2026-09-29162K252K64.0%0
2026-09-28189K442K42.8%10,262
2026-09-2596K131K73.6%200
2026-09-24117K205K56.9%3,800
2026-09-23137K219K62.8%0
2026-09-2242K108K38.6%0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 13 October 2026, the fails-to-deliver balance in TOVX is 93,707 shares, up 67,044 shares over the last settlement date. Over the last 30 readings it ranged from 322 shares (4 September 2026) to 93,707 shares (13 October 2026). The latest reading sits at the top of that range.

SettlementShares failedPriceValue
2026-10-1393,707$0.22$21K
2026-10-0926,663$0.23$6K
2026-10-087,920$0.23$2K
2026-10-053,982$0.23$916
2026-10-023,050$0.23$702
2026-09-2820,197$0.22$4K
2026-09-258,978$0.23$2K
2026-09-245,235$0.23$1K
2026-09-235,008$0.23$1K
2026-09-0811,462$0.25$3K
2026-09-04322$0.25$81
2026-09-027,609$0.25$2K
2026-08-26543$0.24$130
2026-08-2124,959$0.23$6K
2026-08-2032,702$0.23$8K
2026-08-192,454$0.23$564
2026-08-183,946$0.24$947
2026-08-13428$0.24$103
2026-08-124,862$0.23$1K
2026-08-112,890$0.23$665
2026-08-10940$0.22$207
2026-08-0717,228$0.22$4K
2026-08-0655,648$0.23$13K
2026-08-055,586$0.23$1K
2026-08-0463,673$0.22$14K
2026-08-0321,599$0.21$5K
2026-07-3049,701$0.22$11K
2026-07-2919,075$0.21$4K
2026-07-2717,354$0.22$4K
2026-07-24947$0.22$208

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for TOVX in the last 90 days. The most recent filings are listed below. Latest filing: SHALLCROSS STEVEN A (CEO and CFO) on 2023-06-07.

DateInsiderTitleTypeSharesPriceValueOwned after
2023-06-07SHALLCROSS STEVEN ACEO and CFOBuy14K$0.69$10K250K
2023-06-06SHALLCROSS STEVEN ACEO and CFOBuy26K$0.63$16K236K
2023-02-10SHALLCROSS STEVEN ACEO and CFOBuy25K$1.04$26K210K
2023-02-02SHALLCROSS STEVEN ACEO and CFOBuy25K$0.94$24K185K
2023-01-25SHALLCROSS STEVEN ACEO and CFOBuy25K$0.87$22K160K
2023-01-20SHALLCROSS STEVEN ACEO and CFOBuy25K$0.75$19K135K
2022-12-29SHALLCROSS STEVEN ACEO and CFOBuy100K$0.44$44K110K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

2 holders report 5% or more of TOVX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Jeffrey Matthew Gryga Irrevocable Trust at 7.7% of the class (739,211 shares), filed 2025-11-10 for an event on 2025-10-24.

FiledFormHolderSharesOf classEvent
2025-11-1013GJeffrey Matthew Gryga Irrevocable Trustother entity739K7.7%2025-10-24
2025-11-1013GGryga Jeffrey Matthewindividual739K7.7%2025-10-24
2025-10-2113G/Ano. 1Empery Asset Management, LPinvestment adviser, partnership504K5.0%2025-09-30
2025-10-2113G/Ano. 1Ryan M. Laneparent holding company, individual504K5.0%2025-09-30
2025-10-2113G/Ano. 1Martin D. Hoeparent holding company, individual504K5.0%2025-09-30

13F holders

Tracked managers holding TOVX at their latest 13F. JSON

2 of the 30 tracked managers held TOVX at their latest 13F, $20K in total at quarter-end prices. Renaissance Technologies is the largest at $16K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 0 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-3064K$16K0.00%new
Two Sigma Investments2026-06-3015K$4K0.00%+15

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Theriva Biologics in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Theriva Biologics (TOVX), SEC CIK 894158, listed on NYSE. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-13.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2025-11-10.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-11.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2023-06-07.JSON and CSV
Company record
EDGAR filing index for CIK 894158Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other company pages

Datasets

Frequently Asked Questions

How much of TOVX is sold short?
1,846,818 shares were held short at the 2026-10-15 settlement, 3.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is TOVX's daily short volume?
On 2026-11-02, 3,126,630 of the 6,309,562 TOVX shares reported to FINRA were sold short, 49.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TOVX have fails to deliver?
The SEC's latest file shows 93,707 TOVX shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are TOVX insiders buying or selling?
No open-market insider trades were reported for TOVX in the last 90 days. The most recent filings are listed below. Latest filing: SHALLCROSS STEVEN A (CEO and CFO) on 2023-06-07.
Who owns 5% or more of TOVX?
2 holders report 5% or more of TOVX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Jeffrey Matthew Gryga Irrevocable Trust at 7.7% of the class (739,211 shares), filed 2025-11-10 for an event on 2025-10-24.
Which tracked 13F managers own TOVX?
2 of the 30 tracked 13F managers held TOVX shares at their latest filing, $20K in all. The largest: Renaissance Technologies (64K shares, $16K), Two Sigma Investments (15K shares, $4K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.