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Filing Details

Accession Number:: 0000932440-12-000048
Form Type:: 5
Zero Holdings:: No
Publication Time:: 2012-02-09 21:55:49
Reporting Period:: 2011-12-31

Filing Date:: 2012-02-09
Accepted Time:: 2012-02-09 21:55:49
SEC Url:: Form 4 Filing

Issuer

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

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1357610	Ridgeback Capital Management Lp	430 Park Avenue 12Th Floor New York NY 10022	No	No	Yes	No
1358916	Ltd. Investments Capital Ridgeback	430 Park Avenue 12Th Floor New Yor, NY 10022	No	No	Yes	No
1423994	L.p. Investments Capital Ridgeback	430 Park Avenue 12Th Floor New York NY 10022	No	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Class B Common Stock	Disposition	2011-09-22	13,355	$11.10	8,303,710	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-23	8,528	$11.83	8,295,182	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-23	50,000	$11.89	8,245,182	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-26	4,948	$11.79	8,240,234	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-26	50,000	$11.55	8,190,234	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-27	10,132	$11.98	8,180,102	No	4	S	Direct
Class B Common Stock	Disposition	2011-09-27	22,759	$11.55	8,157,343	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-05	49,700	$10.86	8,107,643	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-05	15,017	$10.89	8,092,626	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-06	50,000	$10.91	8,042,626	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-06	12,922	$10.86	8,029,704	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-07	1,600	$10.91	8,028,104	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-10	51,472	$10.98	7,976,632	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-12	5,000	$11.22	7,971,632	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-12	22,330	$11.49	7,949,302	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-13	21,200	$11.84	7,928,102	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-14	38,993	$12.23	7,889,109	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-17	17,122	$12.39	7,871,987	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-21	8,837	$11.85	7,863,150	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-24	26,200	$11.99	7,836,950	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-25	200,000	$12.71	7,636,950	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-26	100,000	$12.85	7,536,950	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-26	34,900	$13.00	7,502,050	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-26	25,000	$13.03	7,477,050	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-27	42,300	$14.28	7,434,750	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-27	160,000	$13.85	7,274,750	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-28	4,100	$14.06	7,270,650	No	4	S	Direct
Class B Common Stock	Disposition	2011-10-31	2,584	$13.81	7,268,066	No	4	S	Direct

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

Footnotes

Ridgeback Capital Investments L.P. owns all of the securities reported herein directly. Ridgeback Capital Investments Ltd. is the general partner of Ridgeback Capital Investments L.P. Pursuant to an investment management agreement, Ridgeback Capital Management LP maintains investment and voting power with respect to the securities held or controlled by Ridgeback Capital Investments Ltd. Wayne Holman, an individual, controls Ridgeback Capital Management LP. Ridgeback Capital Management LP, Ridgeback Capital Investments Ltd. and Wayne Holman do not own any securities reported herein directly and disclaim beneficial ownership of any of the securities covered by this statement, except to the extent of any pecuniary interest therein.
Shares of Class B Common Stock are convertible at any time, at the holder's election, and automatically upon transfer, on a one-for-one basis into shares of Class A Common Stock.