Ruddy Marcella K.
SEC insider (Form 3/4/5 filer). CIK 0002023849. Chief Medical Officer at Tectonic Therapeutic, Inc. (TECX) and 2 other issuers. 15 reported Form 4/5 transactions since Sep 2024; latest on Sep 25, 2026. Located in WATERTOWN, MA.
Companies Ruddy Marcella K. has filed insider reports for
- Tectonic Therapeutic, Inc. (TECX): Officer, Chief Medical Officer
- Sionna Therapeutics, Inc. (SION): Director
- Upstream Bio, Inc. (UPB): Director
Ruddy Marcella K.
CIK: 0002023849
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 (15 total)
- Sep 25, 2026TECX
Tectonic Therapeutic, Inc.
Tax PaymentDirect525 shares at avg. $23.67$12K - Sep 3, 2026TECX
Tectonic Therapeutic, Inc.
AwardDirectEmployee Stock Option (Right to Buy)
24.3K shares- - Jun 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirectNon-Qualified Stock Option (right to buy)
17.3K shares- - Jun 9, 2026UPB
Upstream Bio, Inc.
AwardDirectStock Option (Right to Buy)
17.1K shares- - May 4, 2026TECX
Tectonic Therapeutic, Inc.
SaleDirect1.1K shares at avg. $30.00$32K - Apr 1, 2026TECX
Tectonic Therapeutic, Inc.
SaleDirect1K shares at avg. $31.05$31K - Mar 6, 2026TECX
Tectonic Therapeutic, Inc.
SaleDirect10K shares at avg. $30.00$300K - Mar 4, 2026TECX
Tectonic Therapeutic, Inc.
AwardDirect26.5K shares- - Feb 4, 2026TECX
Tectonic Therapeutic, Inc.
Tax PaymentDirect2.1K shares at avg. $23.22$48K - Sep 25, 2025TECX
Tectonic Therapeutic, Inc.
AwardDirect5.4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 25, 2026 |  TECX Tectonic Therapeutic, Inc. | Tax Payment | 525 | $23.67 | $12,427 | Direct |
| Sep 3, 2026 | TECX Tectonic Therapeutic, Inc. | Award Employee Stock Option (Right to Buy) | 24,250 | - | - | Direct |
| Jun 17, 2026 |  SION Sionna Therapeutics, Inc. | Award Non-Qualified Stock Option (right to buy) | 17,340 | - | - | Direct |
| Jun 9, 2026 |  UPB Upstream Bio, Inc. | Award Stock Option (Right to Buy) | 17,096 | - | - | Direct |
| May 4, 2026 | TECX Tectonic Therapeutic, Inc. | Sale | 1,065 | $30.00 | $31,950 | Direct |
| Apr 1, 2026 | TECX Tectonic Therapeutic, Inc. | Sale | 1,000 | $31.05 | $31,050 | Direct |
| Mar 6, 2026 | TECX Tectonic Therapeutic, Inc. | Sale | 10,000 | $30.00 | $300,000 | Direct |
| Mar 4, 2026 | TECX Tectonic Therapeutic, Inc. | Award | 26,500 | - | $0 | Direct |
| Feb 4, 2026 | TECX Tectonic Therapeutic, Inc. | Tax Payment | 2,064 | $23.22 | $47,926 | Direct |
| Sep 25, 2025 | TECX Tectonic Therapeutic, Inc. | Award | 5,370 | - | - | Direct |
1-10 of 15 transactions