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Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.
Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.
About 41.45% of HTFL shares are held by financial institutions. WEST FAMILY INVESTMENTS, INC. is the top corporate investor, holding 87.77K shares valued at $2.95M. A 0.11% stake in Heartflow, Inc. Common Stock is owned by the company. BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC owns 12.45M shares valued at $419.00M, which translates its holding of 15.44% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Sep 30, 2025 | WEST FAMILY INVESTMENTS, INC. | 0.11% | 87.77K | 2.95M | 87.77K | +100.00% |
| Sep 30, 2025 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 15.44% | 12.45M | 419M | 12.45M | +100.00% |
| Sep 30, 2025 | WELLINGTON MANAGEMENT GROUP LLP | 6.05% | 4.88M | 164.26M | 4.88M | +100.00% |
| Sep 30, 2025 | RTW INVESTMENTS, LP | 0.61% | 495K | 16.66M | 495K | +100.00% |
| Sep 30, 2025 | JPMORGAN CHASE & CO | 0.51% | 412.57K | 13.89M | 412.57K | +100.00% |
| Sep 30, 2025 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 0.12% | 100K | 3.37M | 100K | +100.00% |
| Sep 30, 2025 | AMERIPRISE FINANCIAL INC | 0.12% | 96.82K | 3.26M | 96.82K | +100.00% |
| Sep 30, 2025 | JENNISON ASSOCIATES LLC | 0.12% | 94.12K | 3.17M | 94.12K | +100.00% |
| Sep 30, 2025 | FRED ALGER MANAGEMENT, LLC | 0.37% | 297K | 10M | 297K | +100.00% |
| Sep 30, 2025 | JANUS HENDERSON GROUP PLC | 1.26% | 1.02M | 34.17M | 1.02M | +100.00% |
| Sep 30, 2025 | CITADEL ADVISORS LLC | 0.47% | 377.68K | 12.71M | 377.68K | +100.00% |
| Sep 30, 2025 | EMERALD ADVISERS, LLC | 0.27% | 217.94K | 7.34M | 217.94K | +100.00% |
| Sep 30, 2025 | POINT72 ASSET MANAGEMENT, L.P. | 0.25% | 200.48K | 6.75M | 200.48K | +100.00% |
| Sep 30, 2025 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.13% | 101.59K | 3.42M | 101.59K | +100.00% |
| Sep 30, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 0.11% | 85K | 2.86M | 85K | +100.00% |
| Sep 30, 2025 | EVENTIDE ASSET MANAGEMENT, LLC | 0.1% | 83.99K | 2.83M | 83.99K | +100.00% |
| Sep 30, 2025 | TD ASSET MANAGEMENT INC | 0.1% | 79.96K | 2.69M | 79.96K | +100.00% |
| Sep 30, 2025 | ROYAL BANK OF CANADA | 0.05% | 36.95K | 1.24M | 36.95K | +100.00% |
| Sep 30, 2025 | NORTHERN TRUST CORP | 0.04% | 33.92K | 1.14M | 33.92K | +100.00% |
| Sep 30, 2025 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 0.05% | 39.7K | 1.34M | 39.7K | +100.00% |
| Sep 30, 2025 | ROCK SPRINGS CAPITAL MANAGEMENT LP | 0.31% | 250K | 8.42M | 250K | +100.00% |
| Sep 30, 2025 | BAMCO INC /NY/ | 1.54% | 1.24M | 41.65M | 1.24M | +100.00% |
| Sep 30, 2025 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.51% | 1.21M | 40.9M | 1.21M | +100.00% |
| Sep 30, 2025 | ALLIANCEBERNSTEIN L.P. | 1.39% | 1.12M | 37.8M | 1.12M | +100.00% |
| Sep 30, 2025 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1.05% | 848.46K | 28.56M | 848.46K | +100.00% |
| Sep 30, 2025 | BLACKROCK, INC. | 0.38% | 309.57K | 10.42M | 309.57K | +100.00% |
| Sep 30, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.32% | 255.67K | 8.61M | 255.67K | +100.00% |
| Sep 30, 2025 | SOROS FUND MANAGEMENT LLC | 0.08% | 65.9K | 2.22M | 65.9K | +100.00% |
| Sep 30, 2025 | GOLDMAN SACHS GROUP INC | 0.07% | 57.05K | 1.92M | 57.05K | +100.00% |
| Sep 30, 2025 | BAILLIE GIFFORD & CO | 3.73% | 3.01M | 101.18M | 3.01M | +100.00% |
| Sep 30, 2025 | SCHUSTERMAN INTERESTS, LLC | 2.41% | 1.94M | 65.27M | 1.94M | +100.00% |
| Sep 30, 2025 | VANGUARD GROUP INC | 1.8% | 1.45M | 48.87M | 1.45M | +100.00% |
| Sep 30, 2025 | SEVEN GRAND MANAGERS, LLC | 0.06% | 50K | 1.68M | 50K | +100.00% |
| Sep 30, 2025 | BRAIDWELL LP | 0.06% | 50K | 1.68M | 50K | +100.00% |
| Sep 30, 2025 | EMERALD MUTUAL FUND ADVISERS TRUST | 0.16% | 131.26K | 4.42M | 131.26K | +100.00% |
| Sep 30, 2025 | GILDER GAGNON HOWE & CO LLC | 0.15% | 119.36K | 4.02M | 119.36K | +100.00% |
| Sep 30, 2025 | NEW YORK STATE COMMON RETIREMENT FUND | 0.15% | 119.29K | 4.02M | 119.29K | +100.00% |
| Sep 30, 2025 | MILLENNIUM MANAGEMENT LLC | 0.14% | 116K | 3.9M | 116K | +100.00% |
| Sep 30, 2025 | GHISALLO CAPITAL MANAGEMENT LLC | 0.09% | 75K | 2.52M | 75K | +100.00% |
| Sep 30, 2025 | SCHONFELD STRATEGIC ADVISORS LLC | 0.09% | 75K | 2.52M | 75K | +100.00% |
| Sep 30, 2025 | MORGAN STANLEY | 0.94% | 755.14K | 25.42M | 755.14K | +100.00% |
| Sep 30, 2025 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 0.62% | 499.62K | 16.82M | 499.62K | +100.00% |
| Sep 30, 2025 | BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | 0.39% | 312.23K | 10.51M | 312.23K | +100.00% |
| Sep 30, 2025 | PERCEPTIVE ADVISORS LLC | 0.19% | 150K | 5.05M | 150K | +100.00% |
| Sep 30, 2025 | STATE STREET CORP | 0.09% | 74.48K | 2.51M | 74.48K | +100.00% |
| Sep 30, 2025 | BURKEHILL GLOBAL MANAGEMENT, LP | 0.08% | 65K | 2.19M | 65K | +100.00% |
| Sep 30, 2025 | BANK OF AMERICA CORP /DE/ | 0.08% | 64.98K | 2.19M | 64.98K | +100.00% |
| Sep 30, 2025 | JAIN GLOBAL LLC | 0.04% | 31.2K | 1.05M | 31.2K | +100.00% |
| Sep 30, 2025 | FREESTONE GROVE PARTNERS LP | 0.04% | 30K | 1.01M | 30K | +100.00% |
| Sep 30, 2025 | XXEC, INC. | 0.04% | 29.83K | 1M | 29.83K | +100.00% |
| Sep 30, 2025 | LISANTI CAPITAL GROWTH, LLC | 0.04% | 29.16K | 981.66K | 29.16K | +100.00% |
| Sep 30, 2025 | TRUEMARK INVESTMENTS, LLC | 0.03% | 27.26K | 917.71K | 27.26K | +100.00% |
| Sep 30, 2025 | ZIMMER PARTNERS, LP | 0.02% | 20K | 673.2K | 20K | +100.00% |
| Sep 30, 2025 | BRANDYWINE MANAGERS, LLC | 0.02% | 16.77K | 564.61K | 16.77K | +100.00% |
| Sep 30, 2025 | MAN GROUP PLC | 0.01% | 11.47K | 386.11K | 11.47K | +100.00% |
| Sep 30, 2025 | XTX TOPCO LTD | 0.01% | 11.29K | 380.09K | 11.29K | +100.00% |
| Sep 30, 2025 | CENTIVA CAPITAL, LP | 0.01% | 10.56K | 355.28K | 10.56K | +100.00% |
| Sep 30, 2025 | POINT72 ASIA (SINGAPORE) PTE. LTD. | 0.01% | 8.4K | 282.76K | 8.4K | +100.00% |
| Sep 30, 2025 | SANDIA INVESTMENT MANAGEMENT LP | 0.01% | 7.5K | 252.45K | 7.5K | +100.00% |
| Sep 30, 2025 | LEGATO CAPITAL MANAGEMENT LLC | 0.01% | 7.22K | 242.86K | 7.22K | +100.00% |
Among the HTFL insiders holding of 20.87% of the stake in company, BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC, 10 percent owner, holds the largest shares of 10.45M. FARQUHAR JOHN C.M., Chief Executive Officer, is the second largest HTFL insider with ownership of 591.66K shares. LIGHTCAP JEFFREY C, director, stands third with possession of 40K shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 10 percent owner | 10.45M |
| FARQUHAR JOHN C.M. | Chief Executive Officer | 591.66K |
| LIGHTCAP JEFFREY C | director | 40K |
| CULLIVAN JULIE A | director | 36.41K |
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Feb 10, 2026 | FARQUHAR JOHN C.M. | SALE | 27.46 | 22.56K | 619.55K | 591.66K |
| Feb 05, 2026 | CULLIVAN JULIE A | SALE | 27.32 | 8K | 218.56K | 36.41K |
| Feb 04, 2026 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | SALE | 28.05 | 2M | 56.1M | 10.45M |
| Dec 16, 2025 | LIGHTCAP JEFFREY C | PURCHASE | 26.34 | 40K | 1.05M | 40K |