Question 1

How many shares of STRO does RA CAPITAL MANAGEMENT, L.P. own?

Accepted Answer

RA CAPITAL MANAGEMENT, L.P. previously held 0 shares of STRO (SUTRO BIOPHARMA INC) before exiting the position in 2026-Q2.

Question 2

What is RA CAPITAL MANAGEMENT, L.P.'s STRO position worth?

Accepted Answer

RA CAPITAL MANAGEMENT, L.P.'s STRO position was last reported at $0 in 2026-Q2 before the exit.

Question 3

Is RA CAPITAL MANAGEMENT, L.P. buying or selling STRO?

Accepted Answer

In 2026-Q2, RA CAPITAL MANAGEMENT, L.P. exited their STRO position entirely (-100.0% change in shares).

Question 4

When did RA CAPITAL MANAGEMENT, L.P. first buy STRO?

Accepted Answer

Based on available 13F filings, RA CAPITAL MANAGEMENT, L.P. first reported a position in STRO in 2025-Q1. They have held the position across 9 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Exited	0	-100.0%	$0	0.0%	$33.20	0
2026-Q1	New	715,307	—	$17.8M	0.2%	$19.70	47
2025-Q2	Exited	0	-100.0%	$0	0.0%	$7.30	0
2025-Q1	New	4.4M	—	$2.9M	0.0%	$7.40	36