Brent Pfeiffenberger is CEO & President at Century Therapeutics, Inc. (IPSC). They have made 8 open-market trades across 1 company since 2025, most recently 2026-09-11.
CIK 0002001162
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $48K since 2025, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BFLY | 1,470,704 | $10.6M |
| IPSC | 3,633,839 | $5.0M |
| CRBP | 7,500 | $34K |
| Total | $15.7M |
Shares reported on the most recent Form 4, priced at the 2026-09-15 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IPSC | BUY | 2025-12-12 | 2025-12-16 | $0.58 | $30K | +54.1% | +254.4% | +274.4% |
| IPSC | BUY | 2025-11-19 | 2025-11-20 | $0.50 | $18K | +4.5% | +75.3% | +328.6% |
| IPSC | SELL | 2025-11-17 | 2025-11-19 | $0.45 | $15K | +2.2% | +73.1% | +271.2% |
| IPSC | SELL | 2025-09-08 | 2025-09-10 | $0.50 | $244 | -2.8% | +15.1% | +19.8% |
| IPSC | SELL | 2025-06-09 | 2025-06-11 | $0.62 | $295 | -4.9% | -3.9% | -19.5% |
| IPSC | SELL | 2025-05-16 | 2025-05-20 | $0.55 | $16K | -12.3% | -6.1% | -7.4% |
| IPSC | SELL | 2025-03-10 | 2025-03-12 | $0.62 | $1K | -1.1% | -18.6% | +7.6% |
| IPSC | SELL | 2025-02-18 | 2025-02-20 | $0.78 | $27K | -20.4% | -23.2% | -23.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.