XOOMAR
Get a free API key

GT Biopharma (GTBP)

GT Biopharma on one page: short interest, daily short volume, fails to deliver, large holders, earnings dates and insider trades. Listed on Nasdaq.

Download CSV

279K

Short interest

settlement 2026-10-15

7.2

Days to cover

+2.8 days vs prior

43.2%

Short share of volume

2026-11-02

620

Fails to deliver

settlement 2026-10-14

Fri 13 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 GTBP is 278,799 shares, up 22,185 shares over the last month. Over the last 48 readings it ranged from 11,069 shares (29 November 2024) to 4,784,652 shares (15 July 2026). The latest reading sits at the bottom of that range. At the reported average volume of 39K shares a day that is 7.2 days to cover.

Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/gtbp" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
PreviewDark previewAdd ?theme=dark to the src for a dark chart.
SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-15278,799+7.5%38,6117.22
2026-09-30259,425+1.1%58,7764.41
2026-09-15256,614-93.3%187,3441.37
2026-08-313,842,169-5.4%384,5959.99
2026-08-144,063,295+3.7%438,7279.26
2026-07-313,918,534-18.1%505,3057.75
2026-07-154,784,652+39.7%1,147,9134.17
2026-06-303,424,425+35.6%1,413,3292.42
2026-06-152,525,134+26.5%1,543,9531.64
2026-05-291,996,213-3.8%2,006,7091.00
2026-05-152,075,177+243.3%2,320,9831.00
2026-04-30604,557-9.9%688,0081.00
2026-04-15671,073-10.2%530,1781.27
2026-03-31747,375-26.7%654,5791.14
2026-03-131,019,371-51.2%729,0201.40
2026-02-272,089,377-20.5%923,6962.26
2026-02-132,629,402-2.3%1,881,6001.40
2026-01-302,691,277+11.0%798,7543.37
2026-01-152,425,158+14.9%2,049,9051.18
2025-12-312,111,313+45.3%2,660,0731.00
2025-12-151,453,242-11.2%1,084,1911.34
2025-11-281,636,186+14.6%818,1342.00
2025-11-141,427,430+8.9%1,739,4981.00
2025-10-311,310,410+25.4%581,8982.25
2025-10-151,044,888+327.8%7,583,7181.00
2025-09-30244,248-18.4%539,7611.00
2025-09-15299,507+63.6%714,4211.00
2025-08-29183,043-29.9%147,9811.24
2025-08-15260,999-7.5%75,1523.47
2025-07-31282,275+3.2%79,1473.57
2025-07-15273,519-11.4%140,4581.95
2025-06-30308,730+40.3%83,0813.72
2025-06-13220,120+45.0%68,2913.22
2025-05-30151,779+315.6%156,0131.00
2025-05-1536,519-5.5%6,2935.80
2025-04-3038,658-23.7%29,0741.33
2025-04-1550,641-30.0%16,9812.98
2025-03-3172,301-23.2%28,7732.51
2025-03-1494,195-62.4%49,5011.90
2025-02-28250,247+35.8%3,019,2221.00
2025-02-14184,328-6.2%22,9358.04
2025-01-31196,523+5.1%46,6214.22
2025-01-15186,909+107.7%484,5071.00
2024-12-3189,991+556.0%2,014,2821.00
2024-12-1313,718+23.9%29,8711.00
2024-11-2911,069-43.0%18,3231.00
2024-11-1519,411+9.5%23,7081.00
2024-10-3117,725+70.8%31,3881.00

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of GTBP volume is 43.2%, down 2.0 points over the last five sessions. Over the last 30 readings it ranged from 36.0% (1 October 2026) to 74.8% (25 September 2026). The latest reading is 12.0 points below the 30-session average of 55.2%, on 14K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-026K14K43.2%10
2026-10-306K13K50.3%0
2026-10-2918K30K58.9%0
2026-10-289K21K43.6%183
2026-10-2726K50K52.1%0
2026-10-2644K97K45.1%0
2026-10-2319K33K57.2%15
2026-10-2221K41K51.0%2,803
2026-10-2161K93K65.9%11,086
2026-10-2017K28K61.3%0
2026-10-199K19K49.3%0
2026-10-1617K31K53.8%30
2026-10-1517K30K55.3%8
2026-10-1411K19K58.3%0
2026-10-135K12K40.8%0
2026-10-1211K25K43.3%100
2026-10-099K24K38.3%0
2026-10-0810K17K58.0%0
2026-10-075K8K66.4%0
2026-10-069K13K69.7%0
2026-10-0514K24K60.0%0
2026-10-0219K30K61.9%14
2026-10-017K19K36.0%0
2026-09-307K16K43.3%0
2026-09-2910K15K64.0%6
2026-09-2817K23K71.4%0
2026-09-2532K43K74.8%0
2026-09-2410K14K70.0%0
2026-09-2316K25K62.0%1,241
2026-09-2223K46K50.7%648

Fails to deliver

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

As of 14 October 2026, the fails-to-deliver balance in GTBP is 620 shares, down 8,345 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (25 September 2026) to 42,579 shares (14 September 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-10-14620$6.50$4K
2026-10-138,965$6.80$61K
2026-10-097,118$5.96$42K
2026-10-084,183$6.20$26K
2026-10-075,074$6.37$32K
2026-10-066,639$6.16$41K
2026-10-054,166$6.10$25K
2026-10-02422$6.20$3K
2026-10-016,034$6.47$39K
2026-09-301,738$6.88$12K
2026-09-29121$6.80$823
2026-09-288,232$6.89$57K
2026-09-252$6.83$14
2026-09-24242$7.10$2K
2026-09-23575$7.18$4K
2026-09-225,086$7.18$37K
2026-09-2188$7.16$630
2026-09-182,242$7.49$17K
2026-09-17981$7.81$8K
2026-09-1611,685$9.00$105K
2026-09-1537,896$11.63$441K
2026-09-1442,579$8.61$367K
2026-09-1118,981$6.18$117K
2026-09-103,994$5.98$24K
2026-09-094,313$5.25$23K
2026-09-08100$0.24$24
2026-09-0416,022$0.25$4K
2026-09-0310,523$0.28$3K
2026-09-021,559$0.29$452
2026-09-012,838$0.29$823

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for GTBP in the last 90 days. The most recent filings are listed below. Latest filing: Ohri Manu (CFO & Secretary) on 2023-08-11.

DateInsiderTitleTypeSharesPriceValueOwned after
2023-08-11Ohri ManuCFO & SecretaryOther transaction200K$0.29$57K0
2023-08-11Ohri ManuCFO & SecretaryGrant200K$0.29$58K200K
2023-08-11Ohri ManuCFO & SecretaryOther transaction200K$0.29$58K300K
2023-08-11Breen Michael MartinExecutive Chairman/Interim CEOGrant200K$0.29$58K856K
2023-04-11Breen Michael MartinExecutive Chairman/Interim CEOBuy50K$0.50$25K656K
2023-04-06Ohri ManuCFO & SecretaryBuy50K$0.50$25K50K
2022-07-15Ohri ManuCFO & SecretaryOther transaction100K$0.00$0100K
2022-07-15Ohri ManuCFO & SecretaryOther transaction100K$0.00$00
2022-07-15Ohri ManuCFO & SecretaryGrant100K$0.00$0100K
2022-07-15Breen Michael MartinExec. Chair. and Interim CEOGrant278K$0.00$0606K
2021-02-25Breen Michael MartinDirectorConversion40K$3.40$137K318K
2021-02-25Breen Michael MartinDirectorConversion10K$3.40$34K328K
2021-02-16Berk GregoryDirectorGrant278K$0.00$0278K
2021-02-16Wendel BruceDirectorGrant348K$0.00$0353K
2021-02-16Breen Michael MartinDirectorGrant278K$0.00$0278K
2020-12-22Wendel BruceDirectorBuy1K$8.87$12K5K
2020-12-22Wendel BruceDirectorBuy441$8.73$4K5K
2020-12-22Weldon Steven WOtherSell48K$0.40$19K3.7M
2020-12-21Weldon Steven WFormer Officer and DirectorSell50K$0.30$15K3.9M
2020-12-21Weldon Steven WOtherSell36K$0.34$12K3.8M
2020-12-21Weldon Steven WOtherSell50K$0.33$17K3.8M
2020-12-18Weldon Steven WOtherSell50K$0.30$15K3.9M
2020-12-17Weldon Steven WFormer Officer and DirectorSell50K$0.31$16K4.0M
2020-12-17Weldon Steven WOtherSell50K$0.30$15K4.0M
2020-12-16Weldon Steven WOtherSell50K$0.30$15K4.1M
2020-12-15Weldon Steven WFormer Officer and DirectorSell50K$0.30$15K4.2M
2020-12-15Weldon Steven WFormer Officer and DirectorSell50K$0.30$15K4.2M
2020-12-15Weldon Steven WOtherSell50K$0.32$16K4.1M
2020-12-14Weldon Steven WFormer Officer and DirectorSell50K$0.28$14K4.3M
2020-12-14Weldon Steven WOtherSell46K$0.29$13K4.3M
2020-12-14Weldon Steven WOtherSell50K$0.29$15K4.3M
2020-12-11Weldon Steven WFormer Officer and DirectorSell50K$0.25$13K4.5M
2020-12-11Weldon Steven WOtherSell50K$0.26$13K4.4M
2020-11-16Wendel BruceDirectorBuy3K$3.14$10K3K
2020-06-02Cataldo TonyCEOSell4.2M$0.00$06.5M
2020-05-13Weldon Steven WCFOSell2.3M$0.00$04.5M

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

1 holder reports 5% or more of GTBP in its latest filing, on Schedule 13G (passive). The holder is RainForest Partners, LLC at 10.0% of the class (180,258 shares), filed 2026-09-15 for an event on 2026-09-15.

FiledFormHolderSharesOf classEvent
2026-09-1513GRainForest Partners, LLCcorporation180K10.0%2026-09-15

What this page is

GT Biopharma 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 GT Biopharma (GTBP), SEC CIK 109657, listed on Nasdaq. 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 2026-10-14.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 2026-09-15.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 2025-11-14.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 2023-08-11.JSON and CSV
Company record
EDGAR filing index for CIK 109657Ticker, 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 GTBP is sold short?
278,799 shares were held short at the 2026-10-15 settlement, 7.2 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 GTBP's daily short volume?
On 2026-11-02, 5,852 of the 13,560 GTBP shares reported to FINRA were sold short, 43.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does GTBP have fails to deliver?
The SEC's latest file shows 620 GTBP shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are GTBP insiders buying or selling?
No open-market insider trades were reported for GTBP in the last 90 days. The most recent filings are listed below. Latest filing: Ohri Manu (CFO & Secretary) on 2023-08-11.
Who owns 5% or more of GTBP?
1 holder reports 5% or more of GTBP in its latest filing, on Schedule 13G (passive). The holder is RainForest Partners, LLC at 10.0% of the class (180,258 shares), filed 2026-09-15 for an event on 2026-09-15.

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