Samsara BioCapital’s Sutro Biopharma STRO Stock Holding History

Samsara BioCapital’s Portfolio STRO Stock Details STRO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$26.5M	Buy	1,062,872 +858,369	+420%	+$15.5M	2.57%	9
2025 Q4	$2.37M	Sell	204,503 -15,178	-7%	-$144K	0.24%	19
2025 Q3	$1.91M	Hold	219,681	–	–	0.25%	23
2025 Q2	$1.57M	Hold	219,681	–	–	0.32%	22
2025 Q1	$1.43M	Hold	219,681	–	–	0.25%	23
2024 Q4	$4.04M	Hold	219,681	–	–	0.55%	26
2024 Q3	$7.6M	Hold	219,681	–	–	1.46%	18
2024 Q2	$6.44M	Buy	219,681 +52,123	+31%	+$2.06M	1.35%	19
2024 Q1	$9.47M	Hold	167,558	–	–	1.46%	17
2023 Q4	$7.19M	Hold	167,558	–	–	1.12%	17
2023 Q3	$5.81M	Hold	167,558	–	–	1.78%	15
2023 Q2	$7.79M	Hold	167,558	–	–	1.37%	13
2023 Q1	$7.74M	Hold	167,558	–	–	1.6%	15
2022 Q4	$13.5M	Hold	167,558	–	–	2.91%	9
2022 Q3	$9.3M	Hold	167,558	–	–	2.17%	11
2022 Q2	$8.73M	Hold	167,558	–	–	2.33%	11
2022 Q1	$13.8M	Hold	167,558	–	–	3.47%	9
2021 Q4	$24.9M	Hold	167,558	–	–	4.84%	5
2021 Q3	$31.7M	Hold	167,558	–	–	4.97%	6
2021 Q2	$31.1M	Hold	167,558	–	–	3.85%	8
2021 Q1	$38.1M	Hold	167,558	–	–	7.03%	5
2020 Q4	$36.4K	Hold	167,558	–	–	3.66%	5
2020 Q3	$16.8M	Hold	167,558	–	–	4.7%	6
2020 Q2	$13M	Buy	167,558 +55,000	+49%	+$5.28M	4.18%	9
2020 Q1	$11.5M	Hold	112,558	–	–	6.61%	6
2019 Q4	$12.4M	Hold	112,558	–	–	5.93%	6
2019 Q3	$10.2M	Hold	112,558	–	–	6.96%	7
2019 Q2	$12.8M	Hold	112,558	–	–	8.46%	5
2019 Q1	$12.8M	Hold	112,558	–	–	10.08%	5
2018 Q4	$10.2M	Buy	+112,558	New	+$13.6M	9.75%	4

Other funds holding STRO

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

AAA

Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return

KCM

Kynam Capital Management Princeton, New Jersey $1.62B AUM 138.67% 1-Year Est. Return

OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

EAM

Eventide Asset Management Boston, Massachusetts $6.05B AUM 76.64% 1-Year Est. Return

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return

Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return

ACM

ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return

Samsara BioCapital's STRO Position: Q1 2026 in Review

Samsara BioCapital increased its Sutro Biopharma (STRO) stake by 420% in Q1 2026, buying an estimated $15.5M and bringing the position to 1,062,872 shares worth $26.5M. The position accounts for 2.57% of the portfolio, ranked #9.

Samsara BioCapital first reported a position in STRO in Q4 2018 and has held it in 30 quarters since. The position peaked at $38.1M in Q1 2021. 78 funds tracked by Wall St. Rank hold STRO as of Q1 2026.

Samsara BioCapital held 1,062,872 shares of Sutro Biopharma worth $26.5M as of Q1 2026.
Samsara BioCapital bought 858,369 Sutro Biopharma shares in Q1 2026, an estimated $15.5M.
Sutro Biopharma made up 2.57% of Samsara BioCapital's portfolio in Q1 2026, its #9 holding.
Samsara BioCapital first reported a position in Sutro Biopharma in Q4 2018 and has held it in 30 quarters since.
Samsara BioCapital's Sutro Biopharma position peaked at $38.1M in Q1 2021.
78 funds tracked by Wall St. Rank held Sutro Biopharma as of Q1 2026.

Based on Samsara BioCapital's 13F filing for Q1 2026, filed 15 May 2026.