XOOMAR

Tyra Biosciences, Inc. (TYRA)

Every FINRA and SEC series the site collects for Tyra Biosciences, Inc.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq.

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9.4M

Short interest

settlement 2026-08-31

27.1

Days to cover

-2.6% vs prior

80.9%

Short share of volume

2026-09-17

5,599

Fails to deliver

settlement 2026-08-28

Wed 4 Nov

Next earnings

estimated; last year 2025-11-05

$20K

Insider flow, 90 days

1 buys, 0 sells

As of 2026-09-17.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 31 August 2026, short interest in TYRA is 9,440,216 shares, up 193,281 shares over the last month. Over the last 48 readings it ranged from 1,756,303 shares (31 October 2024) to 11,924,900 shares (30 June 2026). At the reported average volume of 348K shares a day that is 27.1 days to cover, a crowded short.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-319,440,216-2.6%347,85027.14
2026-08-149,689,392+4.8%766,18012.65
2026-07-319,246,935-6.9%518,73617.83
2026-07-159,930,770-16.7%640,83715.50
2026-06-3011,924,900+20.9%1,273,0159.37
2026-06-159,866,801+6.3%1,072,4939.20
2026-05-299,281,430+15.1%707,58313.12
2026-05-158,065,431+4.6%637,65312.65
2026-04-307,708,671-0.0%1,153,3126.68
2026-04-157,709,241-6.7%1,013,0457.61
2026-03-318,264,887+20.6%1,041,1987.94
2026-03-136,853,153+20.9%1,656,1054.14
2026-02-275,667,913+10.2%754,7607.51
2026-02-135,144,732+2.6%752,1726.84
2026-01-305,013,172-1.2%766,4996.54
2026-01-155,073,265-12.4%609,2238.33
2025-12-315,791,320+36.6%543,76510.65
2025-12-154,238,532+2.2%466,4499.09
2025-11-284,146,608-5.2%720,9935.75
2025-11-144,375,041-7.0%237,62518.41
2025-10-314,706,779-18.6%285,07216.51
2025-10-155,782,614-2.3%174,20233.19
2025-09-305,915,988-0.6%178,90133.07
2025-09-155,952,493+0.6%226,89426.23

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 17 September 2026, the short share of TYRA volume is 80.9%, up 3.6 points over the last five sessions. Over the last 52 readings it ranged from 31.0% (2 September 2026) to 88.1% (8 July 2026). The latest reading is 14.0 points above the 30-session average of 66.9%, on 167K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-17135K167K80.9%3,698
2026-09-16296K416K71.3%1,740
2026-09-15400K467K85.5%50
2026-09-14950K1.1M84.3%0
2026-09-11731K850K86.0%0
2026-09-101.1M1.5M77.3%40,759
2026-09-091.3M2.9M42.9%52,653
2026-09-08368K533K69.1%20
2026-09-04679K856K79.3%6,145
2026-09-03138K185K74.6%45,072
2026-09-0269K223K31.0%0
2026-09-01116K176K65.7%0
2026-08-3164K97K66.4%0
2026-08-2844K71K61.4%0
2026-08-2741K97K42.3%0
2026-08-2646K91K50.7%0
2026-08-2561K103K59.3%0
2026-08-2476K119K63.9%0
2026-08-2169K102K67.5%0
2026-08-2085K112K75.7%0
2026-08-1961K83K74.3%0
2026-08-18103K141K73.2%0
2026-08-17157K319K49.1%100
2026-08-14128K212K60.4%300
2026-08-13114K192K59.3%218
2026-08-12104K171K60.7%0
2026-08-11194K245K79.2%0
2026-08-10103K155K66.8%0
2026-08-07268K353K75.9%100
2026-08-06245K341K71.7%2,637

Fails to deliver

SEC, by settlement date. JSON

As of 28 August 2026, the fails-to-deliver balance in TYRA is 5,599 shares, up 1,834 shares over the last settlement date. Over the last 52 readings it ranged from 2 shares (9 January 2026) to 484,466 shares (5 March 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-285,599$26.13$146K
2026-08-273,765$26.22$99K
2026-08-25313$26.09$8K
2026-08-1713,404$25.29$339K
2026-08-1425,757$25.02$644K
2026-08-122,001$25.18$50K
2026-08-052,087$32.53$68K
2026-08-0330$31.88$956
2026-07-31536$33.06$18K
2026-07-304,168$31.11$130K
2026-07-2812,918$31.06$401K
2026-07-27461$30.63$14K
2026-07-165$32.38$162
2026-07-151,535$32.88$50K
2026-07-091,004$32.57$33K
2026-07-0249,845$29.41$1.5M
2026-07-0155,459$31.94$1.8M
2026-06-3030,552$32.11$981K
2026-06-2932,703$31.88$1.0M
2026-06-2628,839$30.94$892K
2026-06-251,450$30.37$44K
2026-06-24587$30.06$18K
2026-06-231,205$30.14$36K
2026-06-223,511$28.32$99K
2026-06-157,447$26.99$201K
2026-06-12467$25.57$12K
2026-06-0824,311$26.64$648K
2026-05-2911$32.68$359
2026-05-2811,605$33.17$385K
2026-05-27304$33.59$10K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

Insiders at TYRA reported 1 open-market buy worth $20K in the last 90 days and no open-market sells. Clustered voluntary buying is historically the stronger insider signal because insiders buy for one reason. Latest filing: Fuhrman Alan (Chief Financial Officer) on 2026-09-15.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-09-15Fuhrman AlanChief Financial OfficerGrant951$9.13$9K37K
2026-09-15Rueb YuliyaVice President, Finance (PAO)Grant3K$9.13$27K11K
2026-09-15Harris ToddPresident and CEOGrant864$9.13$8K1.4M
2026-09-09Verjee Rehann/aBuy972$20.58$20K972
2026-05-05Warner Douglas JChief Medical OfficerGrant25K$0.00$025K
2026-05-05Rueb YuliyaVice President, Finance (PAO)Grant8K$0.00$043K
2026-05-05Harris ToddPresident and CEOGrant79K$0.00$01.4M
2026-05-05Fuhrman AlanChief Financial OfficerGrant20K$0.00$036K
2026-05-05Ashar BhaveshChief Operating OfficerGrant15K$0.00$015K
2026-03-26KAPLAN GILLAn/aDisposition53K$37.75$2.0M28K
2026-03-26KAPLAN GILLAn/aOption exercise53K$2.25$120K81K
2026-03-25KAPLAN GILLAn/aSell14K$36.97$529K28K
2026-03-25KAPLAN GILLAn/aOption exercise14K$2.25$32K43K
2026-03-13Harris ToddPresident and CEOGrant1K$9.13$13K1.4M
2026-03-13Fuhrman AlanChief Financial OfficerGrant1K$9.13$13K16K
2026-02-12Bensen DanielChief Discovery OfficerSell6K$33.37$196K147K
2026-02-12Bensen DanielChief Discovery OfficerSell2K$31.50$67K153K
2026-01-12Bensen DanielChief Discovery OfficerSell1K$29.08$30K155K
2026-01-12Bensen DanielChief Discovery OfficerSell7K$28.44$199K156K
2025-12-19MORE ROBERT Jn/aSell10K$25.00$250K3.8M
2025-12-12Bensen DanielChief Discovery OfficerSell8K$22.64$181K163K
2025-11-21MORE ROBERT Jn/aSell247K$20.25$5.0M3.8M
2025-11-19Bensen DanielChief Operating OfficerSell50K$16.32$815K171K
2025-11-18Bensen DanielChief Operating OfficerSell76K$16.07$1.2M221K
2025-11-17Bensen DanielChief Operating OfficerSell2K$17.07$26K297K
2025-11-17Bensen DanielChief Operating OfficerSell19K$16.11$299K298K
2025-11-14Bensen DanielChief Operating OfficerSell110K$16.02$1.8M317K
2025-11-13Bensen DanielChief Operating OfficerSell1K$16.00$18K427K
2025-09-15Fuhrman AlanChief Financial OfficerGrant701$9.13$6K15K
2025-06-18KAPLAN GILLAn/aSell10K$9.78$94K28K
2025-06-17KAPLAN GILLAn/aSell10$10.35$10438K
2025-06-16RA CAPITAL MANAGEMENT, L.P.n/aBuy12K$10.13$120K10.3M
2025-06-16KAPLAN GILLAn/aSell7K$10.38$71K38K
2025-06-13RA CAPITAL MANAGEMENT, L.P.n/aBuy120K$10.20$1.2M10.2M
2025-06-13KAPLAN GILLAn/aSell15K$10.31$155K45K
2025-06-12RA CAPITAL MANAGEMENT, L.P.n/aBuy31K$10.20$319K10.1M
2025-06-12KAPLAN GILLAn/aSell30K$10.31$309K60K
2025-06-09RA Capital Healthcare Fund LPDirector,TenPercentOwnerBuy187K$10.19$1.9M10.1M
2025-06-05Kolchinsky PeterDirector,TenPercentOwnerBuy213K$10.04$2.1M9.9M
2025-06-04Kolchinsky PeterDirector,TenPercentOwnerBuy998K$9.63$9.6M9.7M
2025-03-14Fuhrman AlanChief Financial OfficerGrant1K$9.78$12K14K
2025-03-14Harris ToddPresident and CEOGrant1K$9.78$12K1.4M
2025-02-05Kjellson Nina SDirectorSell4K$13.76$48K444K
2025-02-05Kjellson Nina SDirectorSell2K$13.76$26K3.7M
2025-01-23Kjellson Nina SDirectorSell5K$16.26$78K3.7M
2025-01-21Kjellson Nina SDirectorSell4K$16.36$65K3.7M
2025-01-17Kjellson Nina SDirectorSell13K$16.40$210K3.7M
2025-01-17Kjellson Nina SDirectorSell461$16.40$8K447K
2025-01-16Kjellson Nina SDirectorSell835$16.29$14K448K
2025-01-16Kjellson Nina SDirectorSell7K$16.29$113K3.7M

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 the rarer, stronger signal.

Planned sales (Form 144)

Newest first. JSON

10 Form 144 notices on file for TYRA worth $11.0M at the prices reported; 0 in the last 90 days worth $0. Latest: GILLA KAPLAN filed on 2026-03-25 to sell 14,295 shares ($529K) from 2026-03-25.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-03-25GILLA KAPLANDirector14K$529K0.027%2026-03-25Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-12Daniel BensenOfficer8K$283K0.015%2026-03-12Merrill Lynch
2026-02-12Daniel BensenOfficer8K$262K0.015%2026-02-12Merrill Lynch
2026-01-12Daniel BensenOfficer8K$232K0.015%2026-01-12Merrill Lynch
2025-12-12Daniel BensenOfficer8K$180K0.015%2025-12-12Merrill Lynch
2025-11-21Alta Partners NextGen Fund II, L.P.Affiliate257K$5.4M0.481%2025-11-21Merrill Lynch
2025-11-18Daniel BensenOfficer125K$2.0M0.233%2025-11-18Merrill Lynch
2025-11-17Daniel BensenOfficer20K$320K0.038%2025-11-17Merrill Lynch
2025-11-14Daniel BensenOfficer86K$1.4M0.162%2025-11-14Merrill Lynch
2025-11-13Daniel BensenOfficer25K$400K0.047%2025-11-13Merrill Lynch

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

49 holders above 5% have filed on TYRA, 4 on Schedule 13D (active intent). The largest reported stake is Peter Kolchinsky at 19.9% of the class (14,130,492 shares), filed 2026-09-17 for an event on 2026-09-15.

FiledFormHolderSharesOf classEvent
2026-09-1713D/Ano. 7Peter Kolchinskyparent holding company, individual14.1M19.9%2026-09-15
2026-09-1713D/Ano. 7RA Capital Management, L.P.investment adviser, partnership14.1M19.9%2026-09-15
2026-09-1713D/Ano. 7Rajeev Shahparent holding company, individual14.1M19.9%2026-09-15
2026-09-1713D/Ano. 7RA Capital Healthcare Fund, L.P.partnership12.1M17.2%2026-09-15
2026-09-1713GParadigm BioCapital Advisors LPpartnership3.5M5.8%2026-09-10
2026-09-1713GSenai Asefaw, M.D.individual3.5M5.8%2026-09-10
2026-09-1713GParadigm BioCapital Advisors GP LLCother entity3.5M5.8%2026-09-10
2026-09-1713GParadigm BioCapital International Fund Ltd.corporation3.1M5.1%2026-09-10
2026-08-1413G/Ano. 2Nextech VI Oncology SCSppartnership3.6M6.0%2026-06-30
2026-08-1413G/Ano. 2Nextech VI GP S.a. r.l.other entity3.6M6.0%2026-06-30
2026-08-1413G/Ano. 2Ian Charoubindividual3.6M6.0%2026-06-30
2026-08-1413G/Ano. 2Costas Constantinidesindividual3.6M6.0%2026-06-30
2026-08-1413G/Ano. 2Rocco Sgobboindividual3.6M6.0%2026-06-30
2026-08-1413G/Ano. 2Farallon F5 (GP), L.L.C.other entity00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Healthcare Partners (GP), L.L.C.other entity00.0%2026-06-30
2026-08-1413G/Ano. 2Dapice Joshua J.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Dreyfuss, Philip D.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Dunn Hannah E.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Gehani, Varun N.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Giauque, Nicolasparent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Husen, Avner A.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Kim, David T.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Linn, Michael G.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Luo Patrick (Cheng)parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Roberts, Jr., Thomas G.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Saito Edric C.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Short Daniel S.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Spokes, Andrew J. M.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Warren, John R.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Wehrly, Mark C.parent holding company, individual6K0.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Management, L.L.C.investment adviser, other entity6K0.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Partners, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Institutional Partners, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Institutional Partners II, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Institutional Partners III, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Four Crossings Institutional Partners V, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital Offshore Investors II, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital (AM) Investors, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Capital F5 Master I, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Healthcare Partners Master, L.P.partnership00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Partners, L.L.C.other entity00.0%2026-06-30
2026-08-1413G/Ano. 2Farallon Institutional (GP) V, L.L.C.other entity00.0%2026-06-30
2026-07-3013GBlackRock, Inc.parent holding company3.0M5.0%2026-06-30
2026-05-1513G/Ano. 2JANUS HENDERSON GROUP PLCparent holding company3.9M7.2%2026-03-31
2026-05-1513G/Ano. 2Michael Kramarzparent holding company, individual2.5M4.2%2026-03-31
2026-05-1513G/Ano. 2Commodore Capital LPinvestment adviser, partnership2.5M4.2%2026-03-31
2026-05-1513G/Ano. 2Robert Egen Atkinsonparent holding company, individual2.5M4.2%2026-03-31
2026-05-1513G/Ano. 2Commodore Capital Master LPpartnership2.5M4.2%2026-03-31
2026-05-1413G/Ano. 1Todd Harrisindividual2.9M4.8%2026-03-31
2026-05-1213G/Ano. 1Dapice Joshua J.individual3.6M6.6%2026-03-31

13F holders

Tracked managers holding TYRA at their latest 13F. JSON

6 of the 30 tracked managers held TYRA at their latest 13F, $33.3M in total at quarter-end prices. Two Sigma Investments is the largest at $14.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 1 cut.

FundQuarterSharesValueOf portfolioChange in shares
Two Sigma Investments2026-06-30450K$14.4M0.01%+348K
Citadel Advisors2026-06-30278K$8.9M0.00%+231K
Millennium Management2026-06-30203K$6.5M0.00%+88K
Fisher Asset Management2026-06-3060K$1.9M0.00%+31K
AQR Capital Management2026-06-3030K$954K0.00%+430
D. E. Shaw & Co.2026-06-3020K$645K0.00%-12K

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

Tyra Biosciences, Inc. 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 pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, 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 summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.

This page follows Tyra Biosciences, Inc. (TYRA), SEC CIK 1863127, listed on Nasdaq. The cross-market tables live on the short interest and insider transactions hubs.

Source and method

Short interest
FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-31.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-17.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-28.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-03-25.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GEDGAR read every 30 minutes; 13D within five business days of crossing 5%, 13G on the passive schedule. Latest 2026-09-17.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K Item 2.02 (full-text search)EDGAR full-text search read twice a day; the estimate is last year's date plus 52 weeks. Latest 2026-08-04.JSON and CSV
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-09-15.JSON and CSV
Company record
EDGAR filing index for CIK 1863127Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 18 Sep 05:40 UTC.

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 crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short 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.

Datasets

Frequently Asked Questions

How much of TYRA is sold short?
9,440,216 shares were held short at the 2026-08-31 settlement, 27.1 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 TYRA's daily short volume?
On 2026-09-17, 135,158 of the 167,106 TYRA shares reported to FINRA were sold short, 80.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TYRA have fails to deliver?
The SEC's latest file shows 5,599 TYRA shares failed to deliver at settlement 2026-08-28. Fails are reported per settlement date and published twice a month with a lag.
Are TYRA insiders buying or selling?
Insiders at TYRA reported 1 open-market buy worth $20K in the last 90 days and no open-market sells. Clustered voluntary buying is historically the stronger insider signal because insiders buy for one reason. Latest filing: Fuhrman Alan (Chief Financial Officer) on 2026-09-15.
Have TYRA insiders filed to sell?
10 Form 144 notices on file for TYRA worth $11.0M at the prices reported; 0 in the last 90 days worth $0. Latest: GILLA KAPLAN filed on 2026-03-25 to sell 14,295 shares ($529K) from 2026-03-25.
Who owns more than 5% of TYRA?
49 holders above 5% have filed on TYRA, 4 on Schedule 13D (active intent). The largest reported stake is Peter Kolchinsky at 19.9% of the class (14,130,492 shares), filed 2026-09-17 for an event on 2026-09-15.
Which funds hold TYRA?
6 of the 30 tracked managers held TYRA at their latest 13F, $33.3M in total at quarter-end prices. Two Sigma Investments is the largest at $14.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 1 cut.

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