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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
730272	Repligen Corp	RGEN	Biological Products, (No Disgnostic Substances) (2836)	042729386

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1606030	Anthony Hunt	C/O Repligen Corporation 41 Seyon St., Bldg 1, Ste 100 Waltham MA 02453	Chief Executive Officer	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2018-09-10	11,873	$16.55	255,017	No	4	M	Direct
Common Stock	Disposition	2018-09-10	27,566	$57.71	227,451	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Disposition	2018-09-10	11,873	$0.00	11,873	$16.55

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
38,127		2024-05-05	No	4	M	Direct

Footnotes

Sale of common stock was effected pursuant to a 10(b)5-1 trading plan adopted on November 17, 2017.
$57.7091 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.18 to $58.10, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
10,000 shares vest and become exercisable on each of the following dates: 5/05/2015, 5/05/2016, 5/05/2017, 5/05/2018 and 5/05/2019.