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OSTERWEIS CAPITAL MANAGEMENT INC

Position in RGEN — Repligen Corp

CIK 1007524 SAN FRANCISCO, CA

Position in RGEN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$10,865,360
+$1,912,869 QoQ
Shares Held
92,220
+68.8% QoQ
Ownership
0.163%
of shares outstanding
% of Portfolio
0.71%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2024
7 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in RGEN Over Time

Shares Held

Position Value (USD)

Position in Medical Instruments & Supplies

Healthcare · as of Mar 31, 2026

OSTERWEIS CAPITAL MANAGEMENT INC holds $21,068,136 across 5 Medical Instruments & Supplies names. RGEN ranks #1 (51.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 RGEN
Repligen Corp
This page
92,220 $10,865,360

All Filings in RGEN

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7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $10,865,360 92,220
2025-12-31 $8,952,491 54,635
2025-09-30 $9,748,553 72,930
2025-03-31 $9,258,618 72,765
2024-12-31 $8,878,938 61,685
2024-09-30 $7,953,684 53,445
2024-06-30 $4,542,572 36,035