CNTA insider buying and SEC filings, explained
Centessa Pharmaceuticals plc · CIK 1847903
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$1.0M
Planned sales (10b5-1)
$12.1M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jun 24, 2026 | Sale | Medicxi Growth I LP (10% owner) sold 19,963,157 shares indirectly; the filing does not report a price. Indirect holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 9 other reporting owners. | SEC filing Filed Jun 24, 2026 |
| Jun 24, 2026 | Sale | (Jersey) SLP Yucca (10% owner) sold 9,961,789 shares indirectly; the filing does not report a price. Indirect holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 2 other reporting owners. | SEC filing Filed Jun 24, 2026 |
| Mar 26, 2026 | Planned (10b5-1) | Karen M. Anderson (Chief People Officer) sold 41,076 shares at about $30.12 ($1.2M), marked as a 10b5-1 plan trade. Holdings down 40% to 62,085 shares. | SEC filing Filed Mar 27, 2026 |
| Mar 26, 2026 | Planned (10b5-1) | Gregory M Weinhoff (Chief Business Officer) sold 23,998 shares at $30.00 ($720K), marked as a 10b5-1 plan trade. Holdings down 27% to 65,925 shares. | SEC filing Filed Mar 26, 2026 |
| Mar 16–17, 2026 | Planned (10b5-1) | Karen M. Anderson (Chief People Officer) sold 74,811 shares between Mar 16 and Mar 17 at about $28.20 ($2.1M), marked as a 10b5-1 plan trade. Holdings down 55% to 62,085 shares. | SEC filing Filed Mar 18, 2026 |
| Mar 13, 2026 | Planned (10b5-1) Amended filing | Karen M. Anderson (Chief People Officer) sold 120,029 shares at about $26.25 ($3.2M), marked as a 10b5-1 plan trade. Holdings down 66% to 62,085 shares. This amends a filing from Mar 13. | SEC filing Filed Mar 16, 2026 |
| Mar 13, 2026 | Planned (10b5-1) | Gregory M Weinhoff (Chief Business Officer) sold 73,196 shares at about $26.33 ($1.9M), marked as a 10b5-1 plan trade. Holdings down 53% to 65,925 shares. | SEC filing Filed Mar 13, 2026 |
| Jan 30–Feb 2, 2026 | Sale | Iqbal J. Hussain (Chief Legal Officer) sold 39,961 shares between Jan 30 and Feb 2 at about $25.15 ($1.0M). Holdings down 41% to 57,645 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 3, 2026 |
| Dec 9, 2025 | Planned (10b5-1) | Mario Alberto Accardi (President / COO) sold 10,000 shares at about $28.83 ($288K), marked as a 10b5-1 plan trade. Holdings down 5% to 178,801 shares. | SEC filing Filed Dec 9, 2025 |
| Dec 8, 2025 | Planned (10b5-1) | Mario Alberto Accardi (President / COO) sold 10,000 shares at $30.00 ($300K), marked as a 10b5-1 plan trade. Holdings down 5% to 188,801 shares. | SEC filing Filed Dec 8, 2025 |
| Nov 17, 2025 | Planned (10b5-1) | Iqbal J. Hussain (General Counsel) sold 6,000 shares at about $27.64 ($166K), marked as a 10b5-1 plan trade. Holdings down 5% to 105,386 shares. | SEC filing Filed Nov 18, 2025 |
| Nov 17, 2025 | Planned (10b5-1) | Tia L Bush (Chief Technology & Quality Ofc) sold 40,000 shares at $28.00 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 25% to 121,503 shares. | SEC filing Filed Nov 18, 2025 |
| Nov 12, 2025 | Planned (10b5-1) | Tia L Bush (Chief Technology & Quality Ofc) sold 40,000 shares at $26.00 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 25% to 121,503 shares. | SEC filing Filed Nov 13, 2025 |
32 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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