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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1399529	Dicerna Pharmaceuticals Inc	DRNA	Pharmaceutical Preparations (2834)	205993609

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1824252	Ling Zeng	C/O Dicerna Pharmaceuticals, Inc. 75 Hayden Avenue Lexington MA 02421	Chief Legal Officer & Sec'y	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
Common Stock	Acquisiton	2021-09-15	4,556	$0.00	4,556	No	4	M	Direct
Common Stock	Disposition	2021-09-17	1,334	$21.47	3,222	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	Restricted Stock Units	Disposition	2021-09-15	4,556	$0.00	4,556	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
13,669			No	4	M	Direct

Footnotes

Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's Common Stock.
Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the RSUs and does not represent a discretionary trade by the Reporting Person.
Represents RSUs that vest over a period of four years, with 25% of the RSUs vesting on each of the first, second, third and fourth anniversaries of September 15, 2020, subject in each case to the Reporting Person's continued employment or service with the Issuer through the applicable vesting date