Tempus AI's top three insider shareholders as of September 29, 2026 are Eric P Lefkofsky (Ceo And Chairman, 24.30Mn shares), Sky Ventures Llc Red (TenPercentOwner, 16.56Mn shares), Bradley A Keywell (TenPercentOwner, 15.22Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eric P Lefkofsky | Ceo And Chairman | 0 | 24,297,883 | 24,297,883 | 43.7% | 24 Sep, 2026 |
| 2 | Bradley A Keywell | TenPercentOwner | 0 | 15,218,365 | 15,218,365 | 27.4% | 22 Jan, 2025 |
| 3 | Sky Ventures Llc Red | TenPercentOwner | 0 | 14,610,249 | 14,610,249 | 26.3% | 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 | 135,189 | 0 | 135,189 | 0.2% | 18 Sep, 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 | Scott Gottlieb | Director | 73,588 | 0 | 73,588 | 0.1% | 26 May, 2026 |
| 11 | Nadja West | Director | 64,049 | 0 | 64,049 | 0.1% | 01 Sep, 2026 |
| 12 | David R Epstein | Director | 62,558 | 0 | 62,558 | 0.1% | 03 Sep, 2026 |
| 13 | Ryan M Bartolucci | Chief Accounting Officer | 60,804 | 0 | 60,804 | 0.1% | 18 Sep, 2026 |
| 14 | Wayne A.I. Frederick | Director | 59,260 | 0 | 59,260 | 0.1% | 26 May, 2026 |
| 15 | Jennifer A Doudna | Director | 53,881 | 0 | 53,881 | 0.1% | 03 Sep, 2026 |
| 16 | Eric D Belcher | Director | 21,424 | 14,033 | 35,457 | 0.1% | 26 May, 2026 |
| 17 | Ryan Fukushima | Ceo, Data | 0 | 15,874 | 15,874 | 0.0% | 18 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 |
|---|---|---|---|---|---|---|---|---|
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 7,394 | $76.57 | $566.16K | 8,595,389 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 33,770 | $77.29 | $2.61Mn | 8,561,619 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 16,152 | $78.23 | $1.26Mn | 8,545,467 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 184 | $78.86 | $14.51K | 8,545,283 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 17,359 | $76.57 | $1.33Mn | 14,968,110 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 79,259 | $77.29 | $6.13Mn | 14,888,851 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 37,950 | $78.23 | $2.97Mn | 14,850,901 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 432 | $78.86 | $34.07K | 14,850,469 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 965 | $76.57 | $73.89K | 808,666 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 4,420 | $77.29 | $341.62K | 804,246 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 2,091 | $78.23 | $163.58K | 802,155 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 24 | $78.86 | $1.89K | 802,131 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 6,431 | $76.57 | $492.42K | 143,569 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 29,367 | $77.29 | $2.27Mn | 114,202 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 14,042 | $78.23 | $1.10Mn | 100,160 | Indirect |
| 22 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 160 | $78.86 | $12.62K | 100,000 | Indirect |
| 17 Sep, 2026 | Andrew Polovin | Evp, Chief Legal Officer | Disposed S | 2,951 | $75.00 | $221.33K | 135,189 | Direct |
| 16 Sep, 2026 | Ryan Fukushima | Ceo, Data | Disposed S | 700 | $70.00 | $49.00K | 15,874 | Indirect |
| 17 Sep, 2026 | Eric P Lefkofsky | Ceo And Chairman | Disposed S | 52,558 | $80.52 | $4.23Mn | 8,607,725 | Indirect |
| 17 Sep, 2026 | Ryan M Bartolucci | Chief Accounting Officer | Disposed S | 7,062 | $75.00 | $529.65K | 60,804 | Direct |