Insiders / Donenberg Phillip B.

Donenberg Phillip B.

CIK 1238120personinsider

Companies

3

First seen

Feb 17, 2026

Last activity

Jun 12, 2026

Companies

Company	Role	Shares held	Peak held	Trades	Latest
Taysha Gene Therapies, Inc. · TSHA	Director	241,289	241,289	2	—
Sensei Biotherapeutics, Inc. · SNSE	Director	—	23,100	3	—
Tectonic Therapeutic, Inc. · TECX	Director	—	10,200	1	—

All securities held

4 positions · latest reported per filing

Company	Security	Shares	As of
Sensei Biotherapeutics, Inc.	Stock Option (right to buy)Derivative	12,500	Jun 10, 2026
Taysha Gene Therapies, Inc.	Common Stock	241,289	Jun 1, 2026
Taysha Gene Therapies, Inc.	Stock Option (right to buy)Derivative	42,671	Jun 1, 2026
Tectonic Therapeutic, Inc.	Stock Option (Right to Buy)Derivative	10,200	Jun 9, 2026

Activity

InsidersInstitutions

This person's insider trades (Form 4), across every company.

Date	Action	Company	Value	Shares Δ	Position after	Impact
Jun 1, 2026	Grant	TSHA Taysha Gene Therapies, Inc. Common Stock	$0	+21K +9.70%	241,289 0.07% of shares	low
Jun 10, 2026	Grant	SNSE Sensei Biotherapeutics, Inc. Stock Option (right to buy)	—	+13K	12,500 0.05% of shares	low
Jun 9, 2026	Grant	TECX Tectonic Therapeutic, Inc. Stock Option (Right to Buy)	—	+10K	10,200 0.05% of shares	low
Jun 1, 2026	Grant	TSHA Taysha Gene Therapies, Inc. Stock Option (right to buy)	—	+43K	42,671 0.01% of shares	low
Apr 10, 2026	Grant	SNSE Sensei Biotherapeutics, Inc. Stock Option (right to buy)	—	+23K	23,100 0.09% of shares	low
Feb 13, 2026	Grant	SNSE Sensei Biotherapeutics, Inc. Stock Option (right to buy)	—	+2K	1,900 <0.01% of shares	low