Diem Nguyen
CIK: 0001814338
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 (14 total)
- Jun 23, 2026CADL
Candel Therapeutics, Inc.
Award(A)DirectStock Option (Right to Buy)
32K shares- - Jun 5, 2026VRCA
Verrica Pharmaceuticals Inc.
Award(A)DirectStock Option (right to buy)
16K shares- - Mar 13, 2026SIGA
SIGA TECHNOLOGIES INC
Exercise(M)Direct85K shares- - Mar 13, 2026SIGA
SIGA TECHNOLOGIES INC
Tax Payment(F)Direct47K shares at avg. $5.26$247K - Mar 13, 2026SIGA
SIGA TECHNOLOGIES INC
Award(A)DirectRestricted Stock Units
272.2K shares- - Jan 27, 2026SIGA
SIGA TECHNOLOGIES INC
Tax Payment(F)Direct22.8K shares at avg. $6.82$156K - Jan 27, 2026SIGA
SIGA TECHNOLOGIES INC
Exercise(M)Direct55.9K shares- - Jun 17, 2025CADL
Candel Therapeutics, Inc.
Award(A)DirectStock Option (Right to Buy)
14.2K shares- - Jun 5, 2025VRCA
Verrica Pharmaceuticals Inc.
Award(A)DirectStock Option (right to buy)
20K shares- - Mar 13, 2025SIGA
SIGA TECHNOLOGIES INC
Award(A)DirectRestricted Stock Units
255.1K shares- - Jan 27, 2025SIGA
SIGA TECHNOLOGIES INC
Exercise(M)Direct55.9K shares- - Jan 27, 2025SIGA
SIGA TECHNOLOGIES INC
Tax Payment(F)Direct23.6K shares at avg. $6.34$150K - Oct 25, 2024SIGA
SIGA TECHNOLOGIES INC
Exercise(M)Direct59.3K shares- - Oct 25, 2024SIGA
SIGA TECHNOLOGIES INC
Tax Payment(F)Direct23.9K shares at avg. $6.77$162K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 23, 2026 |  CADL Candel Therapeutics, Inc. | Award(A) Stock Option (Right to Buy) | 32,000 | - | - | Direct |
| Jun 5, 2026 |  VRCA Verrica Pharmaceuticals Inc. | Award(A) Stock Option (right to buy) | 16,000 | - | - | Direct |
| Mar 13, 2026 |  SIGA SIGA TECHNOLOGIES INC | Exercise(M) | 85,045 | - | $0 | Direct |
| Mar 13, 2026 | SIGA SIGA TECHNOLOGIES INC | Tax Payment(F) | 47,029 | $5.26 | $247,373 | Direct |
| Mar 13, 2026 | SIGA SIGA TECHNOLOGIES INC | Award(A) Restricted Stock Units | 272,243 | - | - | Direct |
| Jan 27, 2026 | SIGA SIGA TECHNOLOGIES INC | Tax Payment(F) | 22,804 | $6.82 | $155,523 | Direct |
| Jan 27, 2026 | SIGA SIGA TECHNOLOGIES INC | Exercise(M) | 55,902 | - | $0 | Direct |
| Jun 17, 2025 | CADL Candel Therapeutics, Inc. | Award(A) Stock Option (Right to Buy) | 14,240 | - | - | Direct |
| Jun 5, 2025 | VRCA Verrica Pharmaceuticals Inc. | Award(A) Stock Option (right to buy) | 20,000 | - | - | Direct |
| Mar 13, 2025 | SIGA SIGA TECHNOLOGIES INC | Award(A) Restricted Stock Units | 255,137 | - | - | Direct |
| Jan 27, 2025 | SIGA SIGA TECHNOLOGIES INC | Exercise(M) | 55,902 | - | $0 | Direct |
| Jan 27, 2025 | SIGA SIGA TECHNOLOGIES INC | Tax Payment(F) | 23,644 | $6.34 | $149,903 | Direct |
| Oct 25, 2024 | SIGA SIGA TECHNOLOGIES INC | Exercise(M) | 59,288 | - | $0 | Direct |
| Oct 25, 2024 | SIGA SIGA TECHNOLOGIES INC | Tax Payment(F) | 23,893 | $6.77 | $161,756 | Direct |
1-14 of 14 transactions
About Nguyen Diem
Nguyen Diem (SEC CIK 0001814338) files insider reports with the SEC as Director of Candel Therapeutics, Inc. (CADL), Director of Verrica Pharmaceuticals Inc. (VRCA) and Chief Executive Officer of SIGA TECHNOLOGIES INC (SIGA).
Signal8 holds 9 ownership filings by Nguyen Diem, all Form 4s, filed between Oct 29, 2024 and Jun 24, 2026. Those filings report 14 transactions, from Oct 25, 2024 to Jun 23, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Nguyen Diem's filings is in WEST CHESTER, PA.
Recent filings by Nguyen Diem
- Jun 23, 2026: Grant or award of CADL derivative securities (Form 4, code A).
- Jun 5, 2026: Grant or award of VRCA derivative securities (Form 4, code A).
- Mar 13, 2026: Option exercise of SIGA shares (Form 4, code M).
- Mar 13, 2026: Tax withholding of SIGA shares (Form 4, code F).
- Mar 13, 2026: Grant or award of SIGA derivative securities (Form 4, code A).
Other insiders filing for Candel Therapeutics, Inc. (CADL)
- Loggia Nicoletta, Director
- PAPA JOSEPH C, Director
- Manning Paul B, Director
- Tak Paul Peter, Chief Executive Officer
- Zimmermann Martine, Director
- Tyagarajan Seshu, Chief Technology Officer