Protara Therapeutics (TARA)
Protara Therapeutics on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances).
6.1M
Short interest
settlement 2026-10-15
4.3
Days to cover
+1.4 days vs prior
25.8%
Short share of volume
2026-11-02
21
Fails to deliver
settlement 2026-08-31
Mon 9 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. JSONAs of 15 October 2026, short interest in TARA is 6,094,189 shares, up 1,677,094 shares over the last month. Over the last 48 readings it ranged from 1,779,982 shares (14 March 2025) to 6,399,060 shares (13 March 2026). The latest reading sits at the top of that range. At the reported average volume of 1.4M shares a day that is 4.3 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 6,094,189 | +5.2% | 1,410,553 | 4.32 |
| 2026-09-30 | 5,791,421 | +31.1% | 1,992,294 | 2.91 |
| 2026-09-15 | 4,417,095 | -0.3% | 427,229 | 10.34 |
| 2026-08-31 | 4,431,963 | -2.4% | 358,569 | 12.36 |
| 2026-08-14 | 4,541,333 | +1.0% | 377,534 | 12.03 |
| 2026-07-31 | 4,495,001 | -1.0% | 392,044 | 11.47 |
| 2026-07-15 | 4,541,891 | +4.8% | 676,262 | 6.72 |
| 2026-06-30 | 4,335,683 | -2.9% | 847,363 | 5.12 |
| 2026-06-15 | 4,465,466 | -24.2% | 682,189 | 6.55 |
| 2026-05-29 | 5,888,171 | +57.5% | 953,737 | 6.17 |
| 2026-05-15 | 3,739,353 | -37.6% | 665,961 | 5.61 |
| 2026-04-30 | 5,995,936 | +4.4% | 626,439 | 9.57 |
| 2026-04-15 | 5,745,340 | +3.5% | 515,484 | 11.15 |
| 2026-03-31 | 5,550,159 | -13.3% | 903,792 | 6.14 |
| 2026-03-13 | 6,399,060 | +30.7% | 1,033,650 | 6.19 |
| 2026-02-27 | 4,895,488 | +48.0% | 1,590,962 | 3.08 |
| 2026-02-13 | 3,308,046 | +16.8% | 537,607 | 6.15 |
| 2026-01-30 | 2,832,933 | +12.3% | 1,209,683 | 2.34 |
| 2026-01-15 | 2,521,732 | +14.7% | 1,223,590 | 2.06 |
| 2025-12-31 | 2,198,324 | -15.5% | 555,983 | 3.95 |
| 2025-12-15 | 2,602,314 | -10.5% | 1,550,119 | 1.68 |
| 2025-11-28 | 2,908,827 | +4.8% | 933,707 | 3.12 |
| 2025-11-14 | 2,774,733 | -1.8% | 426,238 | 6.51 |
| 2025-10-31 | 2,825,459 | -1.0% | 341,518 | 8.27 |
| 2025-10-15 | 2,855,093 | +16.0% | 634,842 | 4.50 |
| 2025-09-30 | 2,461,167 | -8.6% | 981,541 | 2.51 |
| 2025-09-15 | 2,691,670 | -9.9% | 145,698 | 18.47 |
| 2025-08-29 | 2,988,076 | +7.7% | 144,626 | 20.66 |
| 2025-08-15 | 2,773,409 | -5.5% | 196,216 | 14.13 |
| 2025-07-31 | 2,933,406 | +1.6% | 209,092 | 14.03 |
| 2025-07-15 | 2,888,310 | +2.2% | 253,370 | 11.40 |
| 2025-06-30 | 2,825,500 | +28.2% | 708,332 | 3.99 |
| 2025-06-13 | 2,203,964 | +0.9% | 243,446 | 9.05 |
| 2025-05-30 | 2,184,268 | -2.9% | 303,070 | 7.21 |
| 2025-05-15 | 2,248,332 | -9.2% | 307,916 | 7.30 |
| 2025-04-30 | 2,476,584 | +22.1% | 760,600 | 3.26 |
| 2025-04-15 | 2,028,095 | -2.6% | 287,263 | 7.06 |
| 2025-03-31 | 2,083,377 | +17.0% | 225,965 | 9.22 |
| 2025-03-14 | 1,779,982 | -40.0% | 218,941 | 8.13 |
| 2025-02-28 | 2,969,252 | -28.5% | 358,202 | 8.29 |
| 2025-02-14 | 4,152,529 | -1.0% | 233,442 | 17.79 |
| 2025-01-31 | 4,195,938 | -4.7% | 279,297 | 15.02 |
| 2025-01-15 | 4,404,112 | -13.6% | 433,249 | 10.17 |
| 2024-12-31 | 5,099,856 | -5.7% | 683,274 | 7.46 |
| 2024-12-13 | 5,407,104 | +79.3% | 12,716,871 | 1.00 |
| 2024-11-29 | 3,015,992 | +10.7% | 162,781 | 18.53 |
| 2024-11-15 | 2,725,108 | -0.5% | 181,415 | 15.02 |
| 2024-10-31 | 2,737,853 | +18.1% | 255,541 | 10.71 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of TARA volume is 25.8%, down 14.9 points over the last five sessions. Over the last 30 readings it ranged from 7.0% (27 October 2026) to 66.4% (16 October 2026). The latest reading is 9.4 points below the 30-session average of 35.1%, on 152K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 39K | 152K | 25.8% | 2,358 |
| 2026-10-30 | 99K | 236K | 42.0% | 3 |
| 2026-10-29 | 69K | 187K | 36.9% | 0 |
| 2026-10-28 | 54K | 409K | 13.1% | 0 |
| 2026-10-27 | 74K | 1.0M | 7.0% | 0 |
| 2026-10-26 | 156K | 383K | 40.6% | 0 |
| 2026-10-23 | 96K | 434K | 22.2% | 0 |
| 2026-10-22 | 136K | 414K | 32.8% | 0 |
| 2026-10-21 | 93K | 304K | 30.6% | 0 |
| 2026-10-20 | 215K | 567K | 37.8% | 1,000 |
| 2026-10-19 | 246K | 481K | 51.1% | 0 |
| 2026-10-16 | 391K | 588K | 66.4% | 0 |
| 2026-10-15 | 115K | 267K | 43.0% | 0 |
| 2026-10-14 | 116K | 227K | 51.3% | 555 |
| 2026-10-13 | 145K | 388K | 37.4% | 20 |
| 2026-10-12 | 247K | 433K | 57.1% | 0 |
| 2026-10-09 | 221K | 381K | 57.9% | 0 |
| 2026-10-08 | 155K | 291K | 53.3% | 0 |
| 2026-10-07 | 85K | 253K | 33.7% | 0 |
| 2026-10-06 | 85K | 307K | 27.5% | 585 |
| 2026-10-05 | 117K | 440K | 26.6% | 0 |
| 2026-10-02 | 162K | 847K | 19.1% | 17,501 |
| 2026-10-01 | 315K | 982K | 32.1% | 0 |
| 2026-09-30 | 568K | 2.1M | 27.3% | 0 |
| 2026-09-29 | 38K | 113K | 33.6% | 0 |
| 2026-09-28 | 30K | 129K | 23.6% | 0 |
| 2026-09-25 | 83K | 225K | 36.9% | 22 |
| 2026-09-24 | 83K | 238K | 34.8% | 0 |
| 2026-09-23 | 66K | 344K | 19.3% | 0 |
| 2026-09-22 | 542K | 1.6M | 33.0% | 314 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 31 August 2026, the fails-to-deliver balance in TARA is 21 shares, down 1,227 shares over the last settlement date. Over the last 30 readings it ranged from 4 shares (29 May 2026) to 41,081 shares (10 February 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-31 | 21 | $3.82 | $80 |
| 2026-08-04 | 1,248 | $3.97 | $5K |
| 2026-07-29 | 104 | $3.94 | $410 |
| 2026-06-17 | 5 | $3.81 | $19 |
| 2026-06-15 | 675 | $3.90 | $3K |
| 2026-06-10 | 118 | $3.97 | $468 |
| 2026-06-02 | 200 | $4.52 | $904 |
| 2026-05-29 | 4 | $4.75 | $19 |
| 2026-05-22 | 975 | $4.97 | $5K |
| 2026-05-21 | 970 | $4.76 | $5K |
| 2026-05-19 | 2,015 | $4.60 | $9K |
| 2026-04-27 | 261 | $5.13 | $1K |
| 2026-04-21 | 96 | $5.30 | $509 |
| 2026-04-16 | 51 | $5.21 | $266 |
| 2026-03-23 | 4,976 | $5.21 | $26K |
| 2026-03-18 | 816 | $5.45 | $4K |
| 2026-03-05 | 1,570 | $6.20 | $10K |
| 2026-03-04 | 2,060 | $6.15 | $13K |
| 2026-02-27 | 11,500 | $5.77 | $66K |
| 2026-02-26 | 1,697 | $5.96 | $10K |
| 2026-02-25 | 679 | $5.47 | $4K |
| 2026-02-17 | 731 | $6.51 | $5K |
| 2026-02-10 | 41,081 | $6.48 | $266K |
| 2026-02-09 | 5,604 | $6.65 | $37K |
| 2026-02-05 | 7,207 | $6.71 | $48K |
| 2026-02-04 | 6,894 | $6.75 | $47K |
| 2026-02-03 | 6,411 | $7.04 | $45K |
| 2026-02-02 | 16,160 | $7.08 | $114K |
| 2026-01-30 | 13,784 | $7.00 | $96K |
| 2026-01-29 | 27,257 | $7.17 | $195K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for TARA in the last 90 days. The most recent filings are listed below. Latest filing: Shefferman Jesse (CEO and President) on 2026-06-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | Shefferman Jesse | CEO and President | Gift | 5K | $0.00 | $0 | 692K |
| 2026-06-30 | Shefferman Jesse | CEO and President | Gift | 4K | $0.00 | $0 | 697K |
| 2026-06-30 | Shefferman Jesse | CEO and President | Gift | 7K | $0.00 | $0 | 701K |
| 2026-06-30 | Shefferman Jesse | CEO and President | Gift | 14K | $0.00 | $0 | 708K |
| 2026-06-29 | Shefferman Jesse | CEO and President | Sell | 216K | $4.09 | $882K | 722K |
| 2026-06-29 | Shefferman Jesse | CEO and President | Exercise or conversion | 216K | $1.91 | $412K | 938K |
| 2026-06-02 | CONKLING WILLIAM | Chief Commercial Officer | Tax withholding | 6K | $4.34 | $26K | 70K |
| 2026-04-08 | Zummo Jacqueline | Chief R&D Officer | Sell | 1K | $5.40 | $6K | 95K |
| 2026-04-01 | Zummo Jacqueline | Chief R&D Officer | Sell | 23K | $5.26 | $119K | 96K |
| 2026-01-26 | Shefferman Jesse | CEO and President | Tax withholding | 9K | $6.67 | $58K | 1.0M |
| 2026-01-26 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 4K | $6.67 | $25K | 119K |
| 2026-01-26 | Fry Hannah | VP, Controller | Tax withholding | 1K | $6.67 | $10K | 43K |
| 2026-01-26 | Fabbio Patrick | Chief Financial Officer | Tax withholding | 3K | $6.67 | $22K | 64K |
| 2026-01-20 | Shefferman Jesse | CEO and President | Tax withholding | 16K | $5.60 | $91K | 1.0M |
| 2026-01-20 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 7K | $5.60 | $37K | 122K |
| 2026-01-20 | Fry Hannah | VP, Controller | Tax withholding | 2K | $5.60 | $12K | 44K |
| 2026-01-20 | Fabbio Patrick | Chief Financial Officer | Tax withholding | 3K | $5.60 | $17K | 67K |
| 2026-01-16 | Shefferman Jesse | CEO and President | Grant | 87K | $0.00 | $0 | 1.0M |
| 2026-01-16 | Zummo Jacqueline | Chf Scientific Operations Off | Grant | 30K | $0.00 | $0 | 129K |
| 2026-01-16 | Nicacio Leonardo Viana | Chief Medical Officer | Grant | 26K | $0.00 | $0 | 78K |
| 2026-01-16 | Fry Hannah | VP, Controller | Grant | 10K | $0.00 | $0 | 46K |
| 2026-01-16 | Fabbio Patrick | Chief Financial Officer | Grant | 28K | $0.00 | $0 | 70K |
| 2026-01-16 | CONKLING WILLIAM | Chief Commercial Officer | Grant | 26K | $0.00 | $0 | 76K |
| 2025-06-27 | Shefferman Jesse | CEO and President | Gift | 3K | $0.00 | $0 | 960K |
| 2025-06-27 | Shefferman Jesse | CEO and President | Gift | 10K | $0.00 | $0 | 963K |
| 2025-06-26 | Shefferman Jesse | CEO and President | Gift | 3K | $0.00 | $0 | 973K |
| 2025-06-26 | Shefferman Jesse | CEO and President | Gift | 2K | $0.00 | $0 | 977K |
| 2025-06-24 | Shefferman Jesse | CEO and President | Gift | 300K | $0.00 | $0 | 660K |
| 2025-06-02 | CONKLING WILLIAM | Chief Commercial Officer | Grant | 50K | $0.00 | $0 | 50K |
| 2025-05-14 | Levy Richard S | Director | Buy | 20K | $3.19 | $64K | 51K |
| 2025-04-15 | Nicacio Leonardo Viana | Chief Medical Officer | Grant | 50K | $0.00 | $0 | 52K |
| 2025-03-26 | Zummo Jacqueline | Chf Scientific Operations Off | Sell | 21K | $4.53 | $96K | 99K |
| 2025-01-24 | Fabbio Patrick | Chief Financial Officer | Grant | 24K | $0.00 | $0 | 46K |
| 2025-01-24 | Fry Hannah | VP, Controller | Grant | 10K | $0.00 | $0 | 39K |
| 2025-01-24 | Zummo Jacqueline | Chf Scientific Operations Off | Grant | 25K | $0.00 | $0 | 127K |
| 2025-01-24 | Shefferman Jesse | CEO and President | Grant | 65K | $0.00 | $0 | 994K |
| 2025-01-21 | Shefferman Jesse | CEO and President | Tax withholding | 15K | $4.76 | $74K | 914K |
| 2025-01-21 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 7K | $4.76 | $31K | 96K |
| 2025-01-21 | Fry Hannah | VP, Controller | Tax withholding | 2K | $4.76 | $10K | 27K |
| 2025-01-21 | Fabbio Patrick | Chief Financial Officer | Tax withholding | 3K | $4.76 | $15K | 19K |
| 2025-01-03 | Fry Hannah | VP, Controller | Tax withholding | 394 | $6.14 | $2K | 29K |
| 2025-01-03 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 2K | $6.14 | $13K | 102K |
| 2025-01-03 | Shefferman Jesse | CEO and President | Tax withholding | 6K | $6.14 | $40K | 929K |
| 2024-09-12 | Opaleye Management Inc. | TenPercentOwner | Sell | 120K | $1.71 | $205K | 1.9M |
| 2024-09-12 | Opaleye Management Inc. | TenPercentOwner | Sell | 7K | $1.71 | $11K | 45K |
| 2024-09-11 | Opaleye Management Inc. | TenPercentOwner | Sell | 2K | $1.71 | $3K | 52K |
| 2024-09-11 | Opaleye Management Inc. | TenPercentOwner | Sell | 31K | $1.71 | $53K | 2.1M |
| 2024-09-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 2K | $1.77 | $3K | 53K |
| 2024-09-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 24K | $1.77 | $42K | 2.1M |
| 2024-09-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 2K | $1.89 | $4K | 55K |
| 2024-09-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 35K | $1.89 | $65K | 2.1M |
| 2024-08-28 | Shefferman Jesse | CEO and President | Gift | 3K | $0.00 | $0 | 936K |
| 2024-08-28 | Shefferman Jesse | CEO and President | Gift | 5K | $0.00 | $0 | 939K |
| 2024-07-16 | Opaleye Management Inc. | TenPercentOwner | Sell | 4K | $2.44 | $9K | 57K |
| 2024-07-16 | Opaleye Management Inc. | TenPercentOwner | Sell | 8K | $2.44 | $19K | 2.2M |
| 2024-07-11 | Opaleye Management Inc. | TenPercentOwner | Sell | 15K | $2.40 | $36K | 60K |
| 2024-07-11 | Opaleye Management Inc. | TenPercentOwner | Sell | 33K | $2.40 | $79K | 2.2M |
| 2024-07-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $2.31 | $12K | 75K |
| 2024-07-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 13K | $2.31 | $30K | 2.2M |
| 2024-07-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 3K | $2.21 | $6K | 80K |
| 2024-07-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 6K | $2.21 | $13K | 2.2M |
| 2024-07-01 | Opaleye Management Inc. | TenPercentOwner | Sell | 3K | $2.12 | $5K | 88K |
| 2024-07-01 | Opaleye Management Inc. | TenPercentOwner | Sell | 6K | $2.12 | $12K | 2.2M |
| 2024-06-28 | Opaleye Management Inc. | TenPercentOwner | Sell | 5K | $2.07 | $10K | 85K |
| 2024-06-28 | Opaleye Management Inc. | TenPercentOwner | Sell | 13K | $2.07 | $27K | 2.2M |
| 2024-06-27 | Opaleye Management Inc. | TenPercentOwner | Sell | 34K | $2.26 | $77K | 2.2M |
| 2024-06-27 | Opaleye Management Inc. | TenPercentOwner | Sell | 12K | $2.26 | $28K | 90K |
| 2024-06-25 | Opaleye Management Inc. | TenPercentOwner | Sell | 6K | $2.26 | $14K | 102K |
| 2024-06-25 | Opaleye Management Inc. | TenPercentOwner | Sell | 7K | $2.26 | $15K | 2.3M |
| 2024-05-31 | Opaleye Management Inc. | TenPercentOwner | Sell | 6K | $2.90 | $17K | 109K |
| 2024-05-30 | Opaleye Management Inc. | TenPercentOwner | Sell | 9K | $2.94 | $27K | 115K |
| 2024-05-22 | Opaleye Management Inc. | TenPercentOwner | Sell | 9K | $3.02 | $28K | 2.3M |
| 2024-05-22 | Opaleye Management Inc. | TenPercentOwner | Sell | 500 | $3.00 | $2K | 124K |
| 2024-05-21 | Opaleye Management Inc. | TenPercentOwner | Sell | 2K | $3.06 | $6K | 124K |
| 2024-05-21 | Opaleye Management Inc. | TenPercentOwner | Sell | 31K | $3.06 | $95K | 2.3M |
| 2024-05-17 | Opaleye Management Inc. | TenPercentOwner | Sell | 20K | $3.06 | $60K | 2.3M |
| 2024-05-17 | Opaleye Management Inc. | TenPercentOwner | Sell | 47K | $3.33 | $157K | 2.3M |
| 2024-05-17 | Opaleye Management Inc. | TenPercentOwner | Sell | 3K | $3.33 | $9K | 127K |
| 2024-05-17 | Opaleye Management Inc. | TenPercentOwner | Sell | 1K | $3.06 | $4K | 126K |
| 2024-05-10 | Opaleye Management Inc. | TenPercentOwner | Sell | 152K | $3.11 | $472K | 2.4M |
| 2024-05-09 | Opaleye Management Inc. | TenPercentOwner | Sell | 31K | $3.09 | $95K | 2.5M |
| 2024-01-19 | Fry Hannah | VP, Controller | Tax withholding | 904 | $1.91 | $2K | 30K |
| 2024-01-19 | Fry Hannah | VP, Controller | Grant | 8K | $0.00 | $0 | 31K |
| 2024-01-19 | Fabbio Patrick | Chief Financial Officer | Grant | 22K | $0.00 | $0 | 22K |
| 2024-01-19 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 3K | $1.91 | $6K | 104K |
| 2024-01-19 | Zummo Jacqueline | Chf Scientific Operations Off | Grant | 23K | $0.00 | $0 | 107K |
| 2024-01-19 | Shefferman Jesse | CEO and President | Tax withholding | 8K | $1.91 | $15K | 944K |
| 2024-01-19 | Shefferman Jesse | CEO and President | Grant | 59K | $0.00 | $0 | 952K |
| 2024-01-19 | Bandari Jathin | Chief Medical Officer | Tax withholding | 3K | $1.91 | $5K | 57K |
| 2024-01-19 | Bandari Jathin | Chief Medical Officer | Grant | 23K | $0.00 | $0 | 60K |
| 2024-01-10 | Bandari Jathin | Chief Medical Officer | Tax withholding | 2K | $2.39 | $4K | 37K |
| 2024-01-10 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 5K | $2.39 | $12K | 84K |
| 2024-01-10 | Shefferman Jesse | CEO and President | Tax withholding | 6K | $2.39 | $14K | 893K |
| 2024-01-03 | Fry Hannah | VP, Controller | Tax withholding | 324 | $2.17 | $703 | 23K |
| 2024-01-03 | Shefferman Jesse | CEO and President | Tax withholding | 6K | $2.17 | $13K | 899K |
| 2024-01-03 | Zummo Jacqueline | Chf Scientific Operations Off | Tax withholding | 2K | $2.17 | $4K | 90K |
| 2023-07-17 | Fry Hannah | VP, Controller | Tax withholding | 10K | $2.56 | $26K | 23K |
| 2023-07-03 | Bandari Jathin | Chief Medical Officer | Tax withholding | 682 | $2.46 | $2K | 38K |
| 2023-06-27 | Shefferman Jesse | CEO and President | Gift | 7K | $0.00 | $0 | 904K |
| 2023-06-23 | Shefferman Jesse | CEO and President | Gift | 2K | $0.00 | $0 | 912K |
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.
Planned sales (Form 144)
Newest first. JSON12 Form 144 notices on file for TARA worth $16.6M at the prices reported; 0 in the last 90 days worth $0. Latest: JESSE SHEFFERMAN filed on 2026-06-29 to sell 215,687 shares ($882K) from 2026-06-29.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-06-29 | JESSE SHEFFERMANOfficer, Director | 216K | $882K | 0.384% | 2026-06-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-23 | Baker Brothers Life Sciences, L.P.Former Affiliate | 300K | $1.6M | 0.545% | 2026-04-23 | Jefferies LLC |
| 2026-04-23 | 667, L.P.Former Affiliate | 25K | $133K | 0.045% | 2026-04-23 | Jefferies LLC |
| 2026-04-01 | Zummo JacquelineOfficer | 24K | $125K | 0.044% | 2026-04-01 | THE CHARLES SCHWAB CORPORATION |
| 2026-03-06 | Baker Brothers Life Sciences, L.P.Former Affiliate | 462K | $2.7M | 0.862% | 2026-03-06 | Canaccord Genuity LLC |
| 2026-03-06 | 667, L.P.Former Affiliate | 38K | $224K | 0.071% | 2026-03-06 | Canaccord Genuity LLC |
| 2026-03-04 | Baker Brothers Life Sciences, L.P.Former Affiliate | 424K | $2.7M | 0.791% | 2026-03-04 | Canaccord Genuity LLC |
| 2026-03-04 | 667, L.P.Former Affiliate | 35K | $220K | 0.066% | 2026-03-04 | Canaccord Genuity LLC |
| 2026-02-25 | Baker Brothers Life Sciences, L.P.Former Affiliate | 947K | $5.5M | 1.768% | 2026-02-25 | Canaccord Genuity LLC |
| 2026-02-25 | 667, L.P.Former Affiliate | 79K | $457K | 0.147% | 2026-02-25 | Canaccord Genuity LLC |
| 2026-02-24 | Baker Brothers Life Sciences, L.P.Former Affiliate | 322K | $1.9M | 0.601% | 2026-02-24 | Canaccord Genuity LLC |
| 2026-02-24 | 667, L.P.Former Affiliate | 27K | $162K | 0.050% | 2026-02-24 | Canaccord Genuity LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON8 holders report 5% or more of TARA in their latest filing, all on Schedule 13G (passive). The largest reported stake is JANUS HENDERSON GROUP PLC at 9.6% of the class (5,207,011 shares), filed 2026-05-15 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G/Ano. 7 | JANUS HENDERSON GROUP Ltd.parent holding company | 4.7M | 8.4% | 2026-06-30 |
| 2026-07-07 | 13G/Ano. 1 | Millennium Management LLCother entity | 3.2M | 5.7% | 2026-07-01 |
| 2026-07-07 | 13G/Ano. 1 | Millennium Group Management LLCother entity | 3.2M | 5.7% | 2026-07-01 |
| 2026-07-07 | 13G/Ano. 1 | Israel A. Englanderindividual | 3.2M | 5.7% | 2026-07-01 |
| 2026-07-07 | 13G/Ano. 1 | Integrated Core Strategies (US) LLCother entity | 2.9M | 5.1% | 2026-07-01 |
| 2026-05-15 | 13G/Ano. 6 | JANUS HENDERSON GROUP PLCparent holding company | 5.2M | 9.6% | 2026-03-31 |
| 2026-04-27 | 13G | BlackRock, Inc.parent holding company | 3.4M | 6.3% | 2026-03-31 |
| 2025-11-14 | 13G/Ano. 4 | Janus Henderson Biotech Innovation Master Fund Ltdinvestment company | 3.6M | 9.3% | 2025-09-30 |
13F holders
Tracked managers holding TARA at their latest 13F. JSON8 of the 30 tracked managers held TARA at their latest 13F, $21.1M in total at quarter-end prices. Millennium Management is the largest at $11.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 7 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 3.1M | $11.8M | 0.00% | +270K |
| Citadel Advisors | 2026-06-30 | 1.2M | $4.7M | 0.00% | +164K |
| Point72 Asset Management | 2026-06-30 | 549K | $2.1M | 0.00% | -604K |
| Renaissance Technologies | 2026-06-30 | 252K | $961K | 0.00% | +126K |
| AQR Capital Management | 2026-06-30 | 209K | $798K | 0.00% | +142K |
| Fisher Asset Management | 2026-06-30 | 100K | $380K | 0.00% | new |
| Two Sigma Investments | 2026-06-30 | 70K | $266K | 0.00% | +32K |
| D. E. Shaw & Co. | 2026-06-30 | 11K | $42K | 0.00% | new |
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
Protara Therapeutics 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 Protara Therapeutics (TARA), SEC CIK 1359931, listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances). 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 2026-08-31.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-06-29.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 2026-08-13.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 2026-06-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 1359931Ticker, 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.
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Datasets
Frequently Asked Questions
How much of TARA is sold short?
6,094,189 shares were held short at the 2026-10-15 settlement, 4.3 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 TARA's daily short volume?
On 2026-11-02, 39,236 of the 152,168 TARA shares reported to FINRA were sold short, 25.8% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TARA have fails to deliver?
The SEC's latest file shows 21 TARA shares failed to deliver at settlement 2026-08-31. Fails are reported per settlement date and published twice a month with a lag.
Are TARA insiders buying or selling?
No open-market insider trades were reported for TARA in the last 90 days. The most recent filings are listed below. Latest filing: Shefferman Jesse (CEO and President) on 2026-06-30.
Have TARA insiders filed to sell?
12 Form 144 notices on file for TARA worth $16.6M at the prices reported; 0 in the last 90 days worth $0. Latest: JESSE SHEFFERMAN filed on 2026-06-29 to sell 215,687 shares ($882K) from 2026-06-29.
Who owns 5% or more of TARA?
8 holders report 5% or more of TARA in their latest filing, all on Schedule 13G (passive). The largest reported stake is JANUS HENDERSON GROUP PLC at 9.6% of the class (5,207,011 shares), filed 2026-05-15 for an event on 2026-03-31.
Which tracked 13F managers own TARA?
8 of the 30 tracked 13F managers held TARA shares at their latest filing, $21.1M in all. The largest: Izzy Englander's Millennium Management (3.1M shares, $11.8M), Ken Griffin's Citadel Advisors (1.2M shares, $4.7M), Steve Cohen's Point72 Asset Management (549K shares, $2.1M), Renaissance Technologies (252K shares, $961K), Cliff Asness's AQR Capital Management (209K shares, $798K), Ken Fisher's Fisher Asset Management (100K shares, $380K). The table above lists all 8.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.