As of September 05, 2026, the three largest insider holders of HTFL are Capital Life Sciences Investors, Llc Bain (TenPercentOwner, 10.45Mn shares), Capital Life Sciences Investors, Llc Bain (TenPercentOwner, 8.45Mn shares), Capital Life Sciences Investors, Llc Bain (TenPercentOwner, 8.45Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Life Sciences Investors, Llc Bain | TenPercentOwner | 0 | 8,448,158 | 8,448,158 | 42.4% | 30 Apr, 2026 |
| 2 | Partners Management Lp Healthcor | TenPercentOwner | 0 | 6,697,556 | 6,697,556 | 33.6% | 22 Aug, 2025 |
| 3 | Casey M Tansey | Director | 16,447 | 3,171,062 | 3,187,509 | 16.0% | 11 Aug, 2025 |
| 4 | John C.M. Farquhar | Chief Executive Officer | 360,814 | 0 | 360,814 | 1.8% | 25 Aug, 2026 |
| 5 | Vikram Verghese | Chief Financial Officer | 357,010 | 0 | 357,010 | 1.8% | 04 Sep, 2026 |
| 6 | Jeffrey C Lightcap | Director | 293,681 | 0 | 293,681 | 1.5% | 28 Jul, 2026 |
| 7 | William C Weldon | Director | 243,931 | 0 | 243,931 | 1.2% | 10 Jul, 2026 |
| 8 | Timothy C Barabe | Director | 188,231 | 0 | 188,231 | 0.9% | 24 Jul, 2026 |
| 9 | Campbell Rogers | Chief Medical Officer | 86,459 | 0 | 86,459 | 0.4% | 19 Aug, 2026 |
| 10 | Marie L. Jones | Chief Accounting Officer | 34,701 | 0 | 34,701 | 0.2% | 08 May, 2026 |
| 11 | Julie A Cullivan | Director | 27,291 | 0 | 27,291 | 0.1% | 06 Mar, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 02 Sep, 2026 | Vikram Verghese | Chief Financial Officer | Disposed S | 5,876 | $50.60 | $297.33K | 248,683 | Direct |
| 03 Sep, 2026 | Vikram Verghese | Chief Financial Officer | Disposed S | 27,540 | $49.69 | $1.37Mn | 221,143 | Direct |
| 21 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed S | 27,230 | $50.00 | $1.36Mn | 360,814 | Direct |
| 18 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed S | 32,676 | $45.00 | $1.47Mn | 388,044 | Direct |
| 17 Aug, 2026 | Campbell Rogers | Chief Medical Officer | Acquired M | 9,219 | $19.00 | $175.16K | 95,678 | Direct |
| 17 Aug, 2026 | Campbell Rogers | Chief Medical Officer | Disposed S | 9,219 | $41.23 | $380.10K | 86,459 | Direct |
| 17 Aug, 2026 | Campbell Rogers | Chief Medical Officer | Disposed M | 9,219 | $0.00 | $0 | 82,972 | Direct |
| 14 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed S | 15,560 | $39.06 | $607.77K | 420,720 | Direct |
| 10 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed S | 22,562 | $28.31 | $638.73K | 436,280 | Direct |
| 06 Aug, 2026 | Campbell Rogers | Chief Medical Officer | Disposed F | 1,635 | $27.19 | $44.46K | 87,096 | Direct |
| 06 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed F | 5,847 | $27.19 | $158.98K | 460,746 | Direct |
| 07 Aug, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed F | 1,904 | $28.82 | $54.87K | 458,842 | Direct |
| 07 Aug, 2026 | Campbell Rogers | Chief Medical Officer | Disposed F | 637 | $28.82 | $18.36K | 86,459 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Acquired M | 2,789 | $8.33 | $23.23K | 438,162 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Acquired M | 18,694 | $2.22 | $41.50K | 456,856 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Acquired M | 9,737 | $9.58 | $93.28K | 466,593 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed M | 18,694 | $0.00 | $0 | 1,984,637 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed M | 2,789 | $0.00 | $0 | 65,703 | Direct |
| 30 Jul, 2026 | John C.M. Farquhar | Chief Executive Officer | Disposed M | 9,737 | $0.00 | $0 | 182,043 | Direct |
| 24 Jul, 2026 | Jeffrey C Lightcap | Director | Acquired M | 47,420 | $19.00 | $900.98K | 293,681 | Direct |