As of September 05, 2026, Tempus AI's top three insider holders are Eric P Lefkofsky (Ceo And Chairman, 24.76Mn shares), Sky Ventures Llc Red (TenPercentOwner, 16.56Mn shares), Sky Ventures Llc Red (TenPercentOwner, 16.56Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eric P Lefkofsky | Ceo And Chairman | 0 | 24,759,731 | 24,759,731 | 44.2% | 27 Aug, 2026 |
| 2 | Bradley A Keywell | TenPercentOwner | 0 | 15,218,365 | 15,218,365 | 27.2% | 22 Jan, 2025 |
| 3 | Sky Ventures Llc Red | TenPercentOwner | 0 | 14,610,249 | 14,610,249 | 26.1% | 12 Dec, 2024 |
| 4 | Erik Phelps | Evp, Chief Admin. Officer | 375,181 | 0 | 375,181 | 0.7% | 20 Feb, 2026 |
| 5 | Peter J Barris | Director | 236,935 | 0 | 236,935 | 0.4% | 26 May, 2026 |
| 6 | Andrew Polovin | Evp, Chief Legal Officer | 138,140 | 0 | 138,140 | 0.2% | 20 Aug, 2026 |
| 7 | James William Rogers | Chief Financial Officer | 106,024 | 0 | 106,024 | 0.2% | 20 Aug, 2026 |
| 8 | Theodore Leonsis | Director | 21,424 | 66,756 | 88,180 | 0.2% | 26 May, 2026 |
| 9 | Thomas Edward Schoenherr | Ceo, Diagnostics | 87,021 | 0 | 87,021 | 0.2% | 25 Aug, 2026 |
| 10 | Ryan M Bartolucci | Chief Accounting Officer | 67,866 | 0 | 67,866 | 0.1% | 20 Aug, 2026 |
| 11 | Scott Gottlieb | Director | 67,675 | 0 | 67,675 | 0.1% | 22 May, 2025 |
| 12 | Nadja West | Director | 64,049 | 0 | 64,049 | 0.1% | 01 Sep, 2026 |
| 13 | David R Epstein | Director | 62,558 | 0 | 62,558 | 0.1% | 03 Sep, 2026 |
| 14 | Wayne A.I. Frederick | Director | 59,260 | 0 | 59,260 | 0.1% | 26 May, 2026 |
| 15 | Jennifer A Doudna | Director | 47,330 | 0 | 47,330 | 0.1% | 06 Jan, 2026 |
| 16 | Eric D Belcher | Director | 21,424 | 14,033 | 35,457 | 0.1% | 26 May, 2026 |
| 17 | Ryan Fukushima | Ceo, Data | 0 | 16,574 | 16,574 | 0.0% | 03 Sep, 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 |
|---|---|---|---|---|---|---|---|---|
| 28 Aug, 2026 | Nadja West | Director | Disposed S | 3,000 | $69.00 | $207.00K | 31,981 | Direct |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 760 | $64.03 | $48.66K | 8,717,023 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 11,167 | $69.83 | $779.79K | 150,681 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 681 | $70.58 | $48.06K | 150,000 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 2,168 | $64.70 | $140.27K | 8,714,855 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 3,944 | $65.98 | $260.23K | 8,710,911 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 4,218 | $67.01 | $282.65K | 8,706,693 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 10,282 | $68.13 | $700.51K | 8,696,411 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 22,495 | $68.97 | $1.55Mn | 8,673,916 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 12,851 | $69.83 | $897.39K | 8,661,065 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 782 | $70.58 | $55.19K | 8,660,283 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 1,789 | $64.03 | $114.55K | 15,253,680 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 5,093 | $64.70 | $329.52K | 15,248,587 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 9,262 | $65.98 | $611.11K | 15,239,325 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 9,935 | $67.01 | $665.74K | 15,229,390 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 24,161 | $68.13 | $1.65Mn | 15,205,229 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 52,784 | $68.97 | $3.64Mn | 15,152,445 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 30,139 | $69.83 | $2.10Mn | 15,122,306 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 1,837 | $70.58 | $129.66K | 15,120,469 | Indirect |
| 25 Aug, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 101 | $64.03 | $6.47K | 824,530 | Indirect |