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Equibles

BAKER BROS. ADVISORS LP

Position in SERA — Sera Prognostics, Inc.

CIK 1263508 NEW YORK, NY
Back to SERA Full portfolio

Position in SERA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$10,006,669
-$1,154,616 QoQ
Shares Held
5,498,170
0.0% QoQ
Ownership
13.9%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#1
of 46 holders
Holding Since
Sep 2021
20 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SERA Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

BAKER BROS. ADVISORS LP holds $28,681,327 across 2 Medical Devices names. SERA ranks #2 (34.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CERS
Cerus Corp
 6,395,431 $18,674,658
2 SERA
Sera Prognostics, Inc.
This page 		5,498,170 $10,006,669

All Filings in SERA

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20 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $10,006,669 5,498,170
2026-03-31 $11,161,285 5,498,170
2025-12-31 $16,219,601 5,498,170
2025-09-30 $16,824,400 5,498,170
2025-06-30 $15,229,930 5,498,170
2025-03-31 $20,233,265 5,498,170
2024-12-31 $44,236,007 5,434,399
2024-09-30 $42,388,312 5,434,399
2024-06-30 $32,171,642 5,434,399
2024-03-31 $49,453,030 5,434,399
2023-12-31 $32,497,706 5,434,399
2023-09-30 $2,818,536 1,515,342
2023-06-30 $5,856,648 1,777,435
2023-03-31 $6,851,870 1,789,000
2022-12-31 $253,968 201,562
2022-09-30 $322,499 201,562
2022-06-30 $330,561 201,562
2022-03-31 $763,919 201,562
2021-12-31 $1,384,730 201,562
2021-09-30 $2,239,353 201,562