Brent Pfeiffenberger
CIK: 0002001162
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (23 total)
- Sep 11, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct13.9K shares at avg. $1.94$27K - Sep 4, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct463 shares at avg. $2.11$976.93 - Aug 14, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct31.2K shares at avg. $1.92$60K - Jun 11, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct13.8K shares at avg. $2.24$31K - Jun 5, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct463 shares at avg. $2.13$986.19 - May 19, 2026CRBP
Corbus Pharmaceuticals Holdings, Inc.
Award(A)Direct7.5K shares- - May 15, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct31.2K shares at avg. $2.34$73K - Mar 11, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct55.4K shares at avg. $2.73$151K - Mar 6, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct463 shares at avg. $2.56$1K - Feb 13, 2026IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct31.2K shares at avg. $1.75$55K - Feb 2, 2026IPSC
Century Therapeutics, Inc.
Award(A)Direct475K shares- - Dec 12, 2025IPSC
Century Therapeutics, Inc.
Purchase(P)Direct52K shares at avg. $0.58$30K - Dec 10, 2025IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct463 shares at avg. $0.53$243.538 - Nov 19, 2025IPSC
Century Therapeutics, Inc.
Purchase(P)Direct35K shares at avg. $0.50$17K - Nov 17, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct32.5K shares at avg. $0.45$15K - Sep 8, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct488 shares at avg. $0.50$244 - Aug 14, 2025IPSC
Century Therapeutics, Inc.
Award(A)Direct1.6M shares- - Jun 9, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct475 shares at avg. $0.62$295.45 - May 16, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct29.6K shares at avg. $0.55$16K - Mar 11, 2025IPSC
Century Therapeutics, Inc.
Award(A)Direct521.5K shares- - Mar 10, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct2.2K shares at avg. $0.61$1K - Feb 18, 2025IPSC
Century Therapeutics, Inc.
Sale(S)Direct34.7K shares at avg. $0.78$27K - Dec 4, 2024IPSC
Century Therapeutics, Inc.
Tax Payment(F)Direct243.4K shares at avg. $1.44$351K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 11, 2026 |  IPSC Century Therapeutics, Inc. | Tax Payment(F) | 13,850 | $1.94 | $26,869 | Direct |
| Sep 4, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 463 | $2.11 | $977 | Direct |
| Aug 14, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 31,172 | $1.92 | $59,850 | Direct |
| Jun 11, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 13,849 | $2.24 | $31,022 | Direct |
| Jun 5, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 463 | $2.13 | $986 | Direct |
| May 19, 2026 |  CRBP Corbus Pharmaceuticals Holdings, Inc. | Award(A) | 7,500 | - | $0 | Direct |
| May 15, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 31,172 | $2.34 | $72,942 | Direct |
| Mar 11, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 55,397 | $2.73 | $151,234 | Direct |
| Mar 6, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 463 | $2.56 | $1,185 | Direct |
| Feb 13, 2026 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 31,172 | $1.75 | $54,551 | Direct |
| Feb 2, 2026 | IPSC Century Therapeutics, Inc. | Award(A) | 475,000 | - | $0 | Direct |
| Dec 12, 2025 | IPSC Century Therapeutics, Inc. | Purchase(P) | 52,000 | $0.58 | $30,352 | Direct |
| Dec 10, 2025 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 463 | $0.53 | $244 | Direct |
| Nov 19, 2025 | IPSC Century Therapeutics, Inc. | Purchase(P) | 35,000 | $0.50 | $17,329 | Direct |
| Nov 17, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 32,456 | $0.45 | $14,735 | Direct |
| Sep 8, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 488 | $0.50 | $244 | Direct |
| Aug 14, 2025 | IPSC Century Therapeutics, Inc. | Award(A) | 1,587,614 | - | - | Direct |
| Jun 9, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 475 | $0.62 | $295 | Direct |
| May 16, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 29,552 | $0.55 | $16,135 | Direct |
| Mar 11, 2025 | IPSC Century Therapeutics, Inc. | Award(A) | 521,500 | - | - | Direct |
| Mar 10, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 2,235 | $0.61 | $1,375 | Direct |
| Feb 18, 2025 | IPSC Century Therapeutics, Inc. | Sale(S) | 34,712 | $0.78 | $27,179 | Direct |
| Dec 4, 2024 | IPSC Century Therapeutics, Inc. | Tax Payment(F) | 243,447 | $1.44 | $350,564 | Direct |
1-23 of 23 transactions
About Pfeiffenberger Brent
Pfeiffenberger Brent (SEC CIK 0002001162) files insider reports with the SEC as President and CEO of Century Therapeutics, Inc. (IPSC) and Director of Corbus Pharmaceuticals Holdings, Inc. (CRBP).
Signal8 holds 23 ownership filings by Pfeiffenberger Brent (1 Form 3, 22 Form 4), filed between Dec 6, 2024 and Sep 15, 2026. Those filings report 23 transactions, from Dec 4, 2024 to Sep 11, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Pfeiffenberger Brent's filings is in PHILADELPHIA, PA.
Recent filings by Pfeiffenberger Brent
- Sep 11, 2026: Tax withholding of IPSC shares (Form 4, code F).
- Sep 4, 2026: Tax withholding of IPSC shares (Form 4, code F).
- Aug 14, 2026: Tax withholding of IPSC shares (Form 4, code F).
- Jun 11, 2026: Tax withholding of IPSC shares (Form 4, code F).
- Jun 5, 2026: Tax withholding of IPSC shares (Form 4, code F).
Other insiders filing for Century Therapeutics, Inc. (IPSC)
- Russotti Gregory
- Carr Douglas, SVP Finance & Operations
- Truitt Joseph, Director
- Cowan Chad, Chief Scientific Officer
- Riva Alessandro, Director
- Quimi Daphne, Director