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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1426800	Assembly Biosciences Inc.	ASMB	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1238325	R William Ringo	C/O Assembly Biosciences, Inc. 11711 N. Meridian Street, Suite 310 Carmel IN 46032		Yes	No	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	2018-06-01	1,000	$7.20	20,465	No	4	M	Direct
Common Stock	Disposition	2018-06-01	1,000	$42.47	19,465	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	2018-05-30	7,500	$0.00	7,500	$42.09
Common Stock	Stock Option (right to buy)	Disposition	2018-06-01	1,000	$0.00	1,000	$7.20

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
7,500		2028-05-30	No	4	A	Direct
50,000		2024-07-10	No	4	M	Direct

Footnotes

The option exercise and sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
The shares of common stock underlying the option will vest upon the earlier of (i) May 30, 2019 and (ii) the date of the Issuer's 2019 annual meeting of stockholders.
This option, initially representing a right to purchase 64,000 shares, became exercisable in three equal installments on July 11, 2014; July 11, 2015; and July 11, 2016.