Tempus AI, Inc.
TEM- Exchange
- Nasdaq
- Industry
- Services-Computer Programming, Data Processing, Etc.
- SEC CIK
- 0001717115
In the last 90 days, Tempus AI, Inc. insiders filed 0 open-market purchases and 27 sales; 489 institutions reported holding it in 13F filings for Q2 2026, worth $6.41B in total; superinvestors ARK Invest and H&H International Investment hold it.
Holders of 5% or more of TEM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Tempus AI, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Lefkofsky Eric P | 13G/A | 25.90%44.9M shares | – | May 9, 20251 filing | May 9, 2025 | SEC |
| Keywell Bradley A | 13G/A | 7.60%12.8M shares | – | May 15, 20251 filing | May 15, 2025 | SEC |
| Baillie Gifford & Co | 13G/A | 5.80%9.69M shares | −1.50 ppfrom 7.30% | Nov 5, 20243 filings | Nov 12, 2025 | SEC |
| Vanguard Group Inc | 13G | 5.59%9.44M shares | New | Oct 31, 20251 filing | Oct 31, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on Tempus AI, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 13, 20254:30 PM ET | Red Sky Ventures LLCand 1 other | 13G/A | 4.70%8.06M shares | −1.00 ppfrom 5.70%Below 5% | Sep 30, 2025 | SEC |
| Nov 12, 20259:46 AM ET | Baillie Gifford & Co | 13G/A | 5.80%9.69M shares | −1.50 ppfrom 7.30% | Sep 30, 2025 | SEC |
| Oct 31, 202511:30 AM ET | Vanguard Group Inc | 13G | 5.59%9.44M shares | New | Sep 30, 2025 | SEC |
| May 15, 20259:15 AM ET | Keywell Bradley Aand 1 other | 13G/A | 7.60%12.8M shares | – | Jan 17, 2025 | SEC |
| May 9, 20254:14 PM ET | Lefkofsky Eric Pand 2 others | 13G/A | 25.90%44.9M shares | – | Mar 31, 2025 | SEC |
| May 1, 20257:15 PM ET | Red Sky Ventures LLCand 1 other | 13G/A | 5.70%9.50M shares | −1.90 ppfrom 7.60% | Mar 31, 2025 | SEC |
| Apr 30, 20257:18 AM ET | Baillie Gifford & Co | 13G | 7.30%12.3M shares | −1.90 ppfrom 9.20% | Mar 31, 2025 | SEC |
| Feb 12, 20254:30 PM ET | Red Sky Ventures LLCand 1 other | 13G/A | 7.60%11.6M shares | – | Dec 31, 2024 | SEC |
| Nov 5, 202410:35 AM ET | Baillie Gifford & Co | 13G | 9.20%13.8M shares | New | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Tempus AI, Inc. shares.
No Form 144 notices for Tempus AI, Inc. are on file.