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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1399529	Dicerna Pharmaceuticals Inc	DRNA	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1277503	Yasunori Kaneko	525 University Avenue Palo Alto CA 94301	No	No	No	Yes
1296771	Gordon John Freund	525 University Avenue Palo Alto CA 94301	No	No	No	Yes
1419187	Skyline Venture Partners V Lp	525 University Avenue Palo Alto CA 94301	No	No	No	Yes
1434887	Skyline Venture Management V, Llc	525 University Avenue Palo Alto CA 94301	No	No	No	Yes

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	Disposition	2015-02-20	37,532	$26.02	1,719,671	No	4	S	Indirect	see footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	see footnote

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 9, 2014.
The securities are held by Skyline Ventures Partners V, L.P. ("Skyline V"), John G. Freund, M.D. and Yasunori Kaneko, M.D. are Managing Directors of Skyline Venture Management V, LLC the general partner of Skyline V and may be deemed to share voting and dispositive power over share held by Skyline V. Stephen Hoffman, M.D., Ph.D. is a former member of Skyline Venture Management V, LLC that has transitioned to an independent consultant of Skyline with no voting or dispositive power over the shares. Each of Drs. Freund and Kaneko disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.