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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1446847	Ironwood Pharmaceuticals Inc	IRWD	Pharmaceutical Preparations (2834)	043404176

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1601360	E Halley Gilbert	C/O Ironwood Pharmaceuticals, Inc. 301 Binney Street Cambridge MA 02142	Chief Legal Officer	No	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
Class B Common Stock	Acquisiton	2017-02-14	37,385	$3.76	37,385	No	4	M	Direct
Class B Common Stock	Disposition	2017-02-14	37,385	$16.75	0	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
Class B Common Stock	Employee Stock Option (Right to Buy)	Disposition	2017-02-14	37,385	$3.76	37,385	$3.76

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2018-01-31	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Class A Common Stock	65,846	Direct

Footnotes

This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. In order to effect the sale, these shares of Class B Common Stock were converted into shares of Class A Common Stock in accordance with the issuer's certificate of incorporation.
The reporting person acquired 379 shares of Class A Common Stock under the issuer's employee stock purchase plan on December 31, 2016.
The option vested as to 25% of the shares of Class B Common Stock on the first anniversary of February 1, 2008, and 1/48th of the shares of Class B Common Stock vested each month thereafter for the next 36 months. The option was fully vested as of February 1, 2012.