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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1235010	Momenta Pharmaceuticals Inc	MNTA	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1229450	A Craig Wheeler	C/O Momenta Pharmaceuticals, Inc. 301 Binney Street Cambridge MA 02142	President & Ceo	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	2020-02-14	21,894	$13.26	39,372	No	4	M	Direct
Common Stock	Disposition	2020-02-14	21,894	$32.00	17,478	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)	Acquisiton	2020-02-14	21,894	$0.00	21,894	$13.26

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2014-11-22	2021-02-22	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	36,725	Indirect	Craig A Wheeler 2016 Annuity Trust
Common Stock	48,263	Indirect	Craig A Wheeler 2018 Annuity Trust
Common Stock	419,934	Indirect	Craig Wheeler Revocable Trust

Footnotes

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2018.
This transaction was executed in multiple trades at prices ranging from $32.00 to $32.01. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.