REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

MONTAG A & ASSOCIATES INC's Holding History (CIK: 0000829407)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 10 Value ($000) $2 Avg Close $156.63 Range $134.19 - $174.01

Q3 2025

Shares 11 Value ($000) $2 Avg Close $121.47 Range $110.77 - $135.57

Q2 2025

Shares 12 Value ($000) $2 Avg Close $127.25 Range $102.97 - $148.94

Q1 2025

Shares 12 Value ($000) $2 Avg Close $153.93 Range $125.39 - $182.52

Q4 2024

Shares 11 Value ($000) $2 Avg Close $143.40 Range $121.52 - $161.24

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10	$2	$156.63	$134.19 - $174.01
Q3 2025	11	$2	$121.47	$110.77 - $135.57
Q2 2025	12	$2	$127.25	$102.97 - $148.94
Q1 2025	12	$2	$153.93	$125.39 - $182.52
Q4 2024	11	$2	$143.40	$121.52 - $161.24