Heartflow (HTFL)
Heartflow 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 surgical & medical instruments & apparatus.
7.3M
Short interest
settlement 2026-10-15
4.4
Days to cover
+1.1 days vs prior
43.3%
Short share of volume
2026-11-02
7
Fails to deliver
settlement 2026-09-23
Wed 11 Nov
Next earnings
estimated date
-$15.5M
Insider flow, 90 days
0 buys, 18 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 29 settlements in the table, 29 in the chart. JSONAs of 15 October 2026, short interest in HTFL is 7,327,567 shares, up 1,700,176 shares over the last month. Over the last 29 readings it ranged from 401,399 shares (15 October 2025) to 7,327,567 shares (15 October 2026). The latest reading sits at the top of that range. At the reported average volume of 1.7M shares a day that is 4.4 days to cover.
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<iframe src="https://xoomar.com/embed/stocks/htfl" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 7,327,567 | +7.5% | 1,656,456 | 4.42 |
| 2026-09-30 | 6,813,775 | +21.1% | 2,039,619 | 3.34 |
| 2026-09-15 | 5,627,391 | -7.3% | 1,835,869 | 3.07 |
| 2026-08-31 | 6,068,706 | -10.5% | 2,393,576 | 2.54 |
| 2026-08-14 | 6,779,888 | -1.0% | 1,759,484 | 3.85 |
| 2026-07-31 | 6,847,694 | +16.6% | 1,036,128 | 6.61 |
| 2026-07-15 | 5,873,437 | +13.4% | 1,415,386 | 4.15 |
| 2026-06-30 | 5,177,499 | +22.9% | 2,976,559 | 1.74 |
| 2026-06-15 | 4,214,484 | +15.9% | 1,148,698 | 3.67 |
| 2026-05-29 | 3,635,764 | +4.5% | 1,254,061 | 2.90 |
| 2026-05-15 | 3,478,053 | -20.2% | 1,050,649 | 3.31 |
| 2026-04-30 | 4,358,950 | -21.4% | 1,124,737 | 3.88 |
| 2026-04-15 | 5,546,436 | -7.7% | 1,204,794 | 4.60 |
| 2026-03-31 | 6,011,764 | +8.1% | 1,968,882 | 3.05 |
| 2026-03-13 | 5,561,027 | +2.0% | 1,078,851 | 5.15 |
| 2026-02-27 | 5,453,610 | +19.6% | 1,242,370 | 4.39 |
| 2026-02-13 | 4,560,254 | -7.9% | 2,764,033 | 1.65 |
| 2026-01-30 | 4,951,283 | +42.4% | 843,019 | 5.87 |
| 2026-01-15 | 3,476,809 | +9.9% | 830,377 | 4.19 |
| 2025-12-31 | 3,162,641 | +118.3% | 1,033,532 | 3.06 |
| 2025-12-15 | 1,448,787 | +18.8% | 503,079 | 2.88 |
| 2025-11-28 | 1,219,620 | +10.7% | 694,758 | 1.76 |
| 2025-11-14 | 1,102,016 | +127.6% | 499,579 | 2.21 |
| 2025-10-31 | 484,255 | +20.6% | 242,040 | 2.00 |
| 2025-10-15 | 401,399 | -47.6% | 385,257 | 1.04 |
| 2025-09-30 | 766,554 | +28.6% | 447,834 | 1.71 |
| 2025-09-15 | 595,908 | +9.3% | 322,769 | 1.85 |
| 2025-08-29 | 545,224 | +17.7% | 360,159 | 1.51 |
| 2025-08-15 | 463,100 | +100.0% | 1,145,217 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of HTFL volume is 43.3%, down 7.1 points over the last five sessions. Over the last 30 readings it ranged from 28.4% (23 September 2026) to 64.2% (9 October 2026). The latest reading is 3.4 points below the 30-session average of 46.8%, on 794K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 344K | 794K | 43.3% | 5,686 |
| 2026-10-30 | 564K | 1.1M | 52.5% | 7,583 |
| 2026-10-29 | 166K | 434K | 38.3% | 0 |
| 2026-10-28 | 250K | 823K | 30.3% | 1,350 |
| 2026-10-27 | 363K | 822K | 44.1% | 18,850 |
| 2026-10-26 | 155K | 308K | 50.4% | 0 |
| 2026-10-23 | 390K | 779K | 50.1% | 1 |
| 2026-10-22 | 309K | 553K | 55.9% | 8 |
| 2026-10-21 | 418K | 654K | 63.9% | 42,540 |
| 2026-10-20 | 795K | 1.3M | 59.3% | 19,148 |
| 2026-10-19 | 344K | 602K | 57.0% | 1,664 |
| 2026-10-16 | 163K | 314K | 52.0% | 4,632 |
| 2026-10-15 | 319K | 515K | 61.9% | 1,388 |
| 2026-10-14 | 177K | 327K | 54.0% | 156 |
| 2026-10-13 | 173K | 470K | 36.8% | 150 |
| 2026-10-12 | 253K | 458K | 55.2% | 3,981 |
| 2026-10-09 | 220K | 342K | 64.2% | 31 |
| 2026-10-08 | 285K | 727K | 39.2% | 2,670 |
| 2026-10-07 | 263K | 483K | 54.4% | 761 |
| 2026-10-06 | 662K | 1.2M | 53.8% | 6,833 |
| 2026-10-05 | 595K | 1.0M | 59.0% | 501 |
| 2026-10-02 | 253K | 697K | 36.3% | 21 |
| 2026-10-01 | 168K | 423K | 39.7% | 120 |
| 2026-09-30 | 131K | 319K | 41.2% | 1 |
| 2026-09-29 | 140K | 354K | 39.4% | 400 |
| 2026-09-28 | 87K | 261K | 33.4% | 1,045 |
| 2026-09-25 | 120K | 299K | 40.2% | 2 |
| 2026-09-24 | 87K | 292K | 29.8% | 0 |
| 2026-09-23 | 254K | 895K | 28.4% | 5,042 |
| 2026-09-22 | 191K | 498K | 38.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 23 September 2026, the fails-to-deliver balance in HTFL is 7 shares, down 5,993 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (26 June 2026) to 17,560 shares (18 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-23 | 7 | $50.17 | $351 |
| 2026-09-21 | 6,000 | $50.75 | $305K |
| 2026-09-08 | 331 | $48.91 | $16K |
| 2026-09-02 | 134 | $50.43 | $7K |
| 2026-08-26 | 2 | $49.89 | $100 |
| 2026-08-24 | 958 | $49.75 | $48K |
| 2026-08-21 | 102 | $46.80 | $5K |
| 2026-08-19 | 305 | $45.23 | $14K |
| 2026-08-18 | 193 | $41.94 | $8K |
| 2026-08-14 | 404 | $31.01 | $13K |
| 2026-08-10 | 1 | $28.82 | $29 |
| 2026-08-06 | 1 | $27.17 | $27 |
| 2026-08-05 | 7,982 | $27.28 | $218K |
| 2026-07-22 | 4,038 | $25.44 | $103K |
| 2026-07-13 | 12,179 | $26.72 | $325K |
| 2026-06-30 | 111 | $34.85 | $4K |
| 2026-06-26 | 1 | $34.98 | $35 |
| 2026-06-25 | 7 | $34.91 | $244 |
| 2026-06-18 | 17,560 | $32.84 | $577K |
| 2026-06-17 | 144 | $32.05 | $5K |
| 2026-05-26 | 87 | $29.49 | $3K |
| 2026-05-22 | 3,882 | $29.20 | $113K |
| 2026-05-19 | 777 | $25.65 | $20K |
| 2026-05-18 | 216 | $28.32 | $6K |
| 2026-05-15 | 350 | $32.24 | $11K |
| 2026-05-11 | 91 | $29.51 | $3K |
| 2026-05-08 | 67 | $29.98 | $2K |
| 2026-05-07 | 246 | $30.29 | $7K |
| 2026-05-06 | 425 | $29.96 | $13K |
| 2026-05-04 | 16,976 | $28.67 | $487K |
Insider trades
SEC Form 4, newest first. JSONInsiders at HTFL reported 18 open-market sells worth $15.5M in the last 90 days and no open-market buys. Latest filing: Rogers Campbell (Chief Medical Officer) on 2026-10-22.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-22 | Rogers Campbell | Chief Medical Officer | Sell | 24K | $55.01 | $1.3M | 73K |
| 2026-10-22 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 5K | $2.22 | $11K | 97K |
| 2026-10-22 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 12K | $8.33 | $103K | 92K |
| 2026-10-12 | Farquhar John C.M. | Chief Executive Officer | Sell | 39K | $49.57 | $1.9M | 283K |
| 2026-09-18 | Rogers Campbell | Chief Medical Officer | Sell | 20K | $50.15 | $987K | 80K |
| 2026-09-18 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 850 | $2.22 | $2K | 100K |
| 2026-09-18 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 12K | $8.33 | $103K | 99K |
| 2026-09-18 | Verghese Vikram | Chief Financial Officer | Sell | 17K | $50.75 | $851K | 155K |
| 2026-09-17 | Verghese Vikram | Chief Financial Officer | Sell | 8K | $50.11 | $380K | 172K |
| 2026-09-15 | Verghese Vikram | Chief Financial Officer | Sell | 668 | $50.01 | $33K | 180K |
| 2026-09-14 | Verghese Vikram | Chief Financial Officer | Sell | 5K | $50.24 | $231K | 180K |
| 2026-09-11 | Verghese Vikram | Chief Financial Officer | Sell | 30K | $50.06 | $1.5M | 185K |
| 2026-09-11 | Farquhar John C.M. | Chief Executive Officer | Sell | 4K | $50.00 | $195K | 322K |
| 2026-09-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 35K | $46.42 | $1.6M | 326K |
| 2026-09-08 | Verghese Vikram | Chief Financial Officer | Sell | 7K | $50.03 | $332K | 215K |
| 2026-09-03 | Verghese Vikram | Chief Financial Officer | Sell | 28K | $49.69 | $1.4M | 221K |
| 2026-09-02 | Verghese Vikram | Chief Financial Officer | Sell | 6K | $50.60 | $297K | 249K |
| 2026-08-21 | Farquhar John C.M. | Chief Executive Officer | Sell | 27K | $50.00 | $1.4M | 361K |
| 2026-08-18 | Farquhar John C.M. | Chief Executive Officer | Sell | 33K | $45.00 | $1.5M | 388K |
| 2026-08-17 | Rogers Campbell | Chief Medical Officer | Sell | 9K | $41.23 | $380K | 86K |
| 2026-08-17 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 9K | $19.00 | $175K | 96K |
| 2026-08-14 | Farquhar John C.M. | Chief Executive Officer | Sell | 16K | $39.06 | $608K | 421K |
| 2026-08-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $28.31 | $639K | 436K |
| 2026-08-07 | Jones Marie L. | Chief Accounting Officer | Tax withholding | 82 | $28.82 | $2K | 32K |
| 2026-08-07 | Verghese Vikram | Chief Financial Officer | Tax withholding | 473 | $28.82 | $14K | 255K |
| 2026-08-07 | Rogers Campbell | Chief Medical Officer | Tax withholding | 637 | $28.82 | $18K | 86K |
| 2026-08-07 | Farquhar John C.M. | Chief Executive Officer | Tax withholding | 2K | $28.82 | $55K | 459K |
| 2026-08-06 | Jones Marie L. | Chief Accounting Officer | Tax withholding | 486 | $27.19 | $13K | 32K |
| 2026-08-06 | Verghese Vikram | Chief Financial Officer | Tax withholding | 2K | $27.19 | $42K | 255K |
| 2026-08-06 | Rogers Campbell | Chief Medical Officer | Tax withholding | 2K | $27.19 | $44K | 87K |
| 2026-08-06 | Farquhar John C.M. | Chief Executive Officer | Tax withholding | 6K | $27.19 | $159K | 461K |
| 2026-07-30 | Farquhar John C.M. | Chief Executive Officer | Exercise or conversion | 10K | $9.58 | $93K | 467K |
| 2026-07-30 | Farquhar John C.M. | Chief Executive Officer | Exercise or conversion | 19K | $2.22 | $42K | 457K |
| 2026-07-30 | Farquhar John C.M. | Chief Executive Officer | Exercise or conversion | 3K | $8.33 | $23K | 438K |
| 2026-07-27 | Verghese Vikram | Chief Financial Officer | Exercise or conversion | 23K | $2.22 | $50K | 256K |
| 2026-07-24 | Lightcap Jeffrey C | Director | Exercise or conversion | 47K | $19.00 | $901K | 294K |
| 2026-07-22 | BARABE TIMOTHY C | Director | Exercise or conversion | 4K | $19.00 | $70K | 188K |
| 2026-07-21 | Verghese Vikram | Chief Financial Officer | Exercise or conversion | 23K | $2.22 | $50K | 233K |
| 2026-07-17 | BARABE TIMOTHY C | Director | Exercise or conversion | 5K | $19.00 | $95K | 185K |
| 2026-07-15 | Rogers Campbell | Chief Medical Officer | Sell | 9K | $25.72 | $237K | 89K |
| 2026-07-15 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 9K | $19.00 | $175K | 98K |
| 2026-07-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $27.75 | $626K | 435K |
| 2026-07-08 | WELDON WILLIAM C | Director | Exercise or conversion | 17K | $8.33 | $143K | 244K |
| 2026-07-08 | WELDON WILLIAM C | Director | Exercise or conversion | 17K | $8.33 | $143K | 227K |
| 2026-07-08 | WELDON WILLIAM C | Director | Exercise or conversion | 17K | $8.33 | $143K | 210K |
| 2026-06-24 | Farquhar John C.M. | Chief Executive Officer | Sell | 39K | $35.00 | $1.4M | 458K |
| 2026-06-15 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 10K | $2.22 | $22K | 89K |
| 2026-06-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $28.50 | $643K | 497K |
| 2026-05-18 | Rogers Campbell | Chief Medical Officer | Sell | 9K | $28.34 | $261K | 79K |
| 2026-05-18 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 9K | $19.00 | $175K | 88K |
| 2026-05-11 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $29.12 | $657K | 519K |
| 2026-05-07 | Jones Marie L. | Chief Accounting Officer | Tax withholding | 82 | $29.98 | $2K | 31K |
| 2026-05-07 | Rogers Campbell | Chief Medical Officer | Tax withholding | 637 | $29.98 | $19K | 79K |
| 2026-05-07 | Verghese Vikram | Chief Financial Officer | Tax withholding | 473 | $29.98 | $14K | 211K |
| 2026-05-07 | Farquhar John C.M. | Chief Executive Officer | Tax withholding | 2K | $29.98 | $57K | 542K |
| 2026-05-06 | Jones Marie L. | Chief Accounting Officer | Tax withholding | 485 | $30.29 | $15K | 31K |
| 2026-05-06 | Rogers Campbell | Chief Medical Officer | Tax withholding | 2K | $30.29 | $49K | 79K |
| 2026-05-06 | Verghese Vikram | Chief Financial Officer | Tax withholding | 2K | $30.29 | $47K | 211K |
| 2026-05-06 | Farquhar John C.M. | Chief Executive Officer | Tax withholding | 5K | $30.29 | $161K | 544K |
| 2026-04-30 | Bain Capital Life Sciences III General Partner, LLC | TenPercentOwner | Sell | 56K | $30.05 | $1.7M | 8.4M |
| 2026-04-30 | Bain Capital Life Sciences III General Partner, LLC | TenPercentOwner | Sell | 893K | $29.18 | $26.0M | 8.5M |
| 2026-04-30 | Bain Capital Life Sciences Investors, LLC | 10% owner | Sell | 56K | $30.05 | $1.7M | 8.4M |
| 2026-04-30 | Bain Capital Life Sciences Investors, LLC | 10% owner | Sell | 893K | $29.18 | $26.0M | 8.5M |
| 2026-04-29 | Bain Capital Life Sciences III General Partner, LLC | TenPercentOwner | Sell | 797K | $29.37 | $23.4M | 9.4M |
| 2026-04-29 | Bain Capital Life Sciences Investors, LLC | 10% owner | Sell | 797K | $29.37 | $23.4M | 9.4M |
| 2026-04-28 | Bain Capital Life Sciences III General Partner, LLC | TenPercentOwner | Sell | 254K | $30.51 | $7.8M | 10.2M |
| 2026-04-28 | Bain Capital Life Sciences Investors, LLC | 10% owner | Sell | 254K | $30.51 | $7.8M | 10.2M |
| 2026-04-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $26.72 | $603K | 549K |
| 2026-04-01 | Rogers Campbell | Chief Medical Officer | Sell | 65K | $24.64 | $1.6M | 81K |
| 2026-04-01 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 7K | $2.22 | $15K | 146K |
| 2026-04-01 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 41K | $2.22 | $91K | 139K |
| 2026-04-01 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 19K | $2.22 | $42K | 98K |
| 2026-04-01 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 291 | $8.33 | $2K | 79K |
| 2026-03-24 | HealthCor Partners Management LP | Director | Other transaction | 4.6M | price not stated in the filing | not stated | 0 |
| 2026-03-24 | Lightcap Jeffrey C | Director | Other transaction | 206K | $0.00 | $0 | 246K |
| 2026-03-19 | Rogers Campbell | Chief Medical Officer | Sell | 65K | $25.69 | $1.7M | 79K |
| 2026-03-19 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 48K | $2.22 | $106K | 143K |
| 2026-03-19 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 19K | $2.22 | $43K | 95K |
| 2026-03-18 | Farquhar John C.M. | Chief Executive Officer | Sell | 10K | $25.00 | $243K | 572K |
| 2026-03-11 | BARABE TIMOTHY C | Director | Exercise or conversion | 9K | $2.22 | $19K | 180K |
| 2026-03-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 13K | $22.66 | $291K | 581K |
| 2026-03-06 | Jones Marie L. | Chief Accounting Officer | Grant | 2K | $16.15 | $27K | 33K |
| 2026-03-06 | Verghese Vikram | Chief Financial Officer | Grant | 671 | $16.15 | $11K | 214K |
| 2026-03-06 | Farquhar John C.M. | Chief Executive Officer | Grant | 3K | $16.15 | $42K | 594K |
| 2026-03-05 | Cullivan Julie A | Director | Sell | 9K | $25.00 | $228K | 27K |
| 2026-02-17 | BARABE TIMOTHY C | Director | Exercise or conversion | 2K | $8.33 | $21K | 171K |
| 2026-02-12 | Rogers Campbell | Chief Medical Officer | Sell | 65K | $24.49 | $1.6M | 76K |
| 2026-02-12 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 8K | $2.22 | $18K | 141K |
| 2026-02-12 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 40K | $8.33 | $331K | 133K |
| 2026-02-12 | Rogers Campbell | Chief Medical Officer | Exercise or conversion | 19K | $2.22 | $43K | 94K |
| 2026-02-10 | Farquhar John C.M. | Chief Executive Officer | Sell | 23K | $27.46 | $620K | 592K |
| 2026-02-06 | Jones Marie L. | Chief Accounting Officer, VP | Grant | 22K | $0.00 | $0 | 32K |
| 2026-02-06 | Jones Marie L. | Chief Accounting Officer, VP | Tax withholding | 94 | $27.74 | $3K | 10K |
| 2026-02-06 | Rogers Campbell | Chief Medical Officer | Grant | 54K | $0.00 | $0 | 74K |
| 2026-02-06 | Rogers Campbell | Chief Medical Officer | Tax withholding | 515 | $27.74 | $14K | 20K |
| 2026-02-06 | Verghese Vikram | Chief Financial Officer | Grant | 68K | $0.00 | $0 | 213K |
| 2026-02-06 | Verghese Vikram | Chief Financial Officer | Tax withholding | 542 | $27.74 | $15K | 144K |
| 2026-02-06 | Farquhar John C.M. | Chief Executive Officer | Grant | 184K | $0.00 | $0 | 614K |
| 2026-02-06 | Farquhar John C.M. | Chief Executive Officer | Tax withholding | 2K | $27.74 | $43K | 430K |
| 2026-02-05 | Cullivan Julie A | Director | Sell | 8K | $27.32 | $219K | 36K |
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. JSON38 Form 144 notices on file for HTFL worth $41.8M at the prices reported; 22 in the last 90 days worth $30.7M. Latest: Rogers Campbell filed on 2026-10-22 to sell 23,933 shares ($1.3M) from 2026-10-22.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-22 | Rogers CampbellOfficer | 24K | $1.3M | 0.028% | 2026-10-22 | Fidelity Brokerage Services LLC |
| 2026-10-22 | Rogers CampbellMember of immediate family of any of the foregoing | 6K | $311K | 0.007% | 2026-10-22 | Fidelity Brokerage Services LLC |
| 2026-10-13 | Farquhar John C.M.Officer, Director | 39K | $1.9M | 0.045% | 2026-10-12 | Fidelity Brokerage Services LLC |
| 2026-09-18 | Verghese VikramOfficer | 17K | $851K | 0.019% | 2026-09-18 | Fidelity Brokerage Services LLC |
| 2026-09-18 | Rogers CampbellMember of immediate family of any of the foregoing | 6K | $283K | 0.007% | 2026-09-18 | Fidelity Brokerage Services LLC |
| 2026-09-18 | Rogers CampbellOfficer | 20K | $987K | 0.023% | 2026-09-18 | Fidelity Brokerage Services LLC |
| 2026-09-17 | Verghese VikramOfficer | 8K | $380K | 0.009% | 2026-09-17 | Fidelity Brokerage Services LLC |
| 2026-09-15 | Verghese VikramOfficer | 668 | $33K | 0.001% | 2026-09-15 | Fidelity Brokerage Services LLC |
| 2026-09-14 | Verghese VikramOfficer | 5K | $231K | 0.005% | 2026-09-14 | Fidelity Brokerage Services LLC |
| 2026-09-11 | Verghese VikramOfficer | 30K | $1.5M | 0.034% | 2026-09-11 | Fidelity Brokerage Services LLC |
| 2026-09-11 | Farquhar John C.M.Officer, Director | 4K | $195K | 0.004% | 2026-09-11 | Fidelity Brokerage Services LLC |
| 2026-09-10 | Farquhar John C.M.Officer, Director | 35K | $1.6M | 0.040% | 2026-09-10 | Fidelity Brokerage Services LLC |
| 2026-09-08 | Verghese VikramOfficer | 7K | $332K | 0.008% | 2026-09-08 | Fidelity Brokerage Services LLC |
| 2026-09-03 | Verghese VikramOfficer | 28K | $1.4M | 0.032% | 2026-09-03 | Fidelity Brokerage Services LLC |
| 2026-09-02 | Verghese VikramOfficer | 6K | $297K | 0.007% | 2026-09-02 | Fidelity Brokerage Services LLC |
| 2026-08-21 | Farquhar John C.M.Officer, Director | 27K | $1.4M | 0.031% | 2026-08-21 | Fidelity Brokerage Services LLC |
| 2026-08-18 | Farquhar John C.M.Officer, Director | 33K | $1.5M | 0.038% | 2026-08-18 | Fidelity Brokerage Services LLC |
| 2026-08-17 | Rogers CampbellOfficer | 9K | $380K | 0.011% | 2026-08-17 | Fidelity Brokerage Services LLC |
| 2026-08-14 | Healey Joseph PatrickAffiliate of HCPCIV 1 LLC | 150K | $6.2M | 0.174% | 2026-08-14 | J.P. Morgan Securities LLC |
| 2026-08-14 | Farquhar John C.M.Officer, Director | 16K | $608K | 0.018% | 2026-08-14 | Fidelity Brokerage Services LLC |
| 2026-08-14 | Cohen Arthur BruceAffiliate of HCPCIV 1 LLC | 200K | $8.4M | 0.231% | 2026-08-14 | UBS Financial Services Inc. |
| 2026-08-10 | Farquhar John C.M.Officer, Director | 23K | $639K | 0.026% | 2026-08-10 | Fidelity Brokerage Services LLC |
| 2026-07-15 | Rogers CampbellOfficer | 9K | $237K | 0.011% | 2026-07-15 | Fidelity Brokerage Services LLC |
| 2026-07-10 | Farquhar John C.M.Officer, Director | 23K | $626K | 0.026% | 2026-07-10 | Fidelity Brokerage Services LLC |
| 2026-06-24 | Farquhar John C.M.Officer, Director | 39K | $1.4M | 0.045% | 2026-06-24 | Fidelity Brokerage Services LLC |
| 2026-06-10 | Farquhar John C.M.Officer, Director | 23K | $643K | 0.026% | 2026-06-10 | Fidelity Brokerage Services LLC |
| 2026-05-18 | Rogers CampbellOfficer | 9K | $261K | 0.011% | 2026-05-18 | Fidelity Brokerage Services LLC |
| 2026-05-11 | Farquhar John C.M.Officer, Director | 23K | $657K | 0.026% | 2026-05-11 | Fidelity Brokerage Services LLC |
| 2026-04-10 | Farquhar John C.M.Officer, Director | 23K | $603K | 0.026% | 2026-04-10 | Fidelity Brokerage Services LLC |
| 2026-04-01 | Rogers CampbellOfficer | 65K | $1.6M | 0.075% | 2026-04-01 | Fidelity Brokerage Services LLC |
| 2026-03-19 | Rogers CampbellOfficer | 65K | $1.7M | 0.075% | 2026-03-19 | Fidelity Brokerage Services LLC |
| 2026-03-18 | Farquhar John C.M.Officer, Director | 10K | $243K | 0.011% | 2026-03-18 | Fidelity Brokerage Services LLC |
| 2026-03-10 | Farquhar John C.M.Officer, Director | 13K | $291K | 0.015% | 2026-03-10 | Fidelity Brokerage Services LLC |
| 2026-03-05 | Cullivan Julie ADirector | 9K | $228K | 0.011% | 2026-03-05 | Fidelity Brokerage Services LLC |
| 2026-02-12 | Cullivan Julie ADirector | 8K | $219K | 0.009% | 2026-02-05 | Fidelity Brokerage Services LLC |
| 2026-02-12 | Rogers CampbellOfficer | 65K | $1.6M | 0.077% | 2026-02-12 | Fidelity Brokerage Services LLC |
| 2026-02-10 | Farquhar John C.M.Officer, Director | 23K | $620K | 0.026% | 2026-02-10 | Fidelity Brokerage Services LLC |
| 2026-02-05 | Cullivan Julie ADirector | 8K | $219K | 0.009% | 2026-02-05 | Fidelity Brokerage Services LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON9 holders report 5% or more of HTFL in their latest filing, all on Schedule 13G (passive). The largest reported stake is BCLS Fund III Investments, LP at 9.8% of the class (8,448,158 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 2 | BCLS Fund III Investments, LPpartnership | 8.4M | 9.8% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Wellington Investment Advisors Holdings LLPparent holding company | 7.9M | 9.1% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Wellington Management Group LLPparent holding company | 7.9M | 9.1% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Wellington Group Holdings LLPparent holding company | 7.9M | 9.1% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Wellington Management Company LLPinvestment adviser | 7.9M | 8.9% | 2026-06-30 |
| 2026-07-28 | 13G | BlackRock, Inc.parent holding company | 4.9M | 5.7% | 2026-06-30 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Management Holdings Limitednon-US institution | 634K | 0.7% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Healthcare Opportunities Invest LPnon-US institution | 634K | 0.7% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Healthcare Opportunities Fund GP S.a.r.l.non-US institution | 634K | 0.7% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Heartflow UK Limitednon-US institution | 531K | 0.6% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Tourmaline LuxCo S.a.r.l.non-US institution | 103K | 0.1% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin SOF III AIV GP S.a.r.l.non-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin AUS AIV LP - AUS SOF III Seriesnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Special Opportunities Fund III AIV LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin AUS AIV LP - Hostplus Seriesnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Special Opportunities Fund II LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin SOF II GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Opal 2020 (B) LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Opal 2020 (A) LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Opal 2020 GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Hamilton LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Hamilton GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Big Cypress LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Big Cypress GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | SunHay LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | SunHay GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Chief LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Chief GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Hostplus LPnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Hostplus GP Limitednon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin Special Opportunities Fund III SCSpnon-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-05-11 | 13G/Ano. 1 | Hayfin SOF III GP S.a.r.l.non-US institution | 0 | 0.0% | 2026-02-06 |
| 2026-03-31 | 13G | HealthCor Partners Management LPinvestment adviser | 2.1M | 2.4% | 2026-03-24 |
| 2026-03-31 | 13G | HealthCor Partners Fund LPother entity | 1.2M | 1.5% | 2026-03-24 |
| 2026-03-31 | 13G | HealthCor Partners Fund II, L.P.other entity | 833K | 1.0% | 2026-03-24 |
| 2025-11-24 | 13G | HCPCIV 1, LLCother entity | 6.7M | 7.9% | 2025-08-11 |
| 2025-11-05 | 13G | Abigail P. Johnsonindividual | 4.7M | 5.7% | 2025-09-30 |
| 2025-11-05 | 13G | FMR LLCparent holding company | 4.7M | 5.7% | 2025-09-30 |
13F holders
Tracked managers holding HTFL at their latest 13F. JSON7 of the 30 tracked managers held HTFL at their latest 13F, $121.6M in total at quarter-end prices. Point72 Asset Management is the largest at $50.5M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Point72 Asset Management | 2026-06-30 | 1.7M | $50.5M | 0.06% | +1.2M |
| Millennium Management | 2026-06-30 | 923K | $27.1M | 0.01% | -171K |
| Citadel Advisors | 2026-06-30 | 800K | $23.5M | 0.00% | +43K |
| Renaissance Technologies | 2026-06-30 | 383K | $11.2M | 0.02% | new |
| AQR Capital Management | 2026-06-30 | 303K | $8.9M | 0.00% | +94K |
| D. E. Shaw & Co. | 2026-06-30 | 9K | $255K | 0.00% | new |
| Two Sigma Investments | 2026-06-30 | 7K | $209K | 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
Heartflow 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 Heartflow (HTFL), SEC CIK 1464521, listed on Nasdaq, classified by the SEC as surgical & medical instruments & apparatus. 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 2026-09-23.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 2026-10-22.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 2026-08-14.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 2026-08-13.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 2026-10-22.JSON and CSV
- Company record
- EDGAR filing index for CIK 1464521Ticker, 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 HTFL is sold short?
7,327,567 shares were held short at the 2026-10-15 settlement, 4.4 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 HTFL's daily short volume?
On 2026-11-02, 344,358 of the 794,483 HTFL shares reported to FINRA were sold short, 43.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does HTFL have fails to deliver?
The SEC's latest file shows 7 HTFL shares failed to deliver at settlement 2026-09-23. Fails are reported per settlement date and published twice a month with a lag.
Are HTFL insiders buying or selling?
Insiders at HTFL reported 18 open-market sells worth $15.5M in the last 90 days and no open-market buys. Latest filing: Rogers Campbell (Chief Medical Officer) on 2026-10-22.
Have HTFL insiders filed to sell?
38 Form 144 notices on file for HTFL worth $41.8M at the prices reported; 22 in the last 90 days worth $30.7M. Latest: Rogers Campbell filed on 2026-10-22 to sell 23,933 shares ($1.3M) from 2026-10-22.
Who owns 5% or more of HTFL?
9 holders report 5% or more of HTFL in their latest filing, all on Schedule 13G (passive). The largest reported stake is BCLS Fund III Investments, LP at 9.8% of the class (8,448,158 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own HTFL?
7 of the 30 tracked 13F managers held HTFL shares at their latest filing, $121.6M in all. The largest: Steve Cohen's Point72 Asset Management (1.7M shares, $50.5M), Izzy Englander's Millennium Management (923K shares, $27.1M), Ken Griffin's Citadel Advisors (800K shares, $23.5M), Renaissance Technologies (383K shares, $11.2M), Cliff Asness's AQR Capital Management (303K shares, $8.9M), D. E. Shaw & Co. (9K shares, $255K). The table above lists all 7.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.