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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1435049	Aduro Biotech Inc.	ADRO	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1635127	A. Lois And E. John Rogers	C/O Aduro Biotech, Inc. 626 Bancroft Way, 3C Berkeley CA 94710		No	No	Yes	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	2015-04-20	14,400	$0.00	28,308	No	4	C	Direct
Common Stock	Acquisiton	2015-04-20	543,988	$0.00	572,296	No	4	C	Direct
Common Stock	Acquisiton	2015-04-20	2,193,460	$0.00	2,765,756	No	4	C	Direct
Common Stock	Acquisiton	2015-04-20	2,847,774	$0.00	5,613,530	No	4	C	Direct
Common Stock	Acquisiton	2015-04-20	231,171	$0.00	5,844,701	No	4	C	Direct
Common Stock	Acquisiton	2015-04-20	147,058	$17.00	5,991,759	No	4	P	Direct
Common Stock	Acquisiton	2015-04-20	37,898	$0.00	37,898	No	4	C	Indirect	By Buchholz Rogers Family Living Trust 2012
Common Stock	Acquisiton	2015-04-20	14,400	$0.00	52,298	No	4	C	Indirect	By Buchholz Rogers Family Living Trust 2012
Common Stock	Acquisiton	2015-04-20	18,949	$0.00	18,949	No	4	C	Indirect	By Christopher Hagerman
Common Stock	Acquisiton	2015-04-20	7,200	$0.00	26,149	No	4	C	Indirect	By Christopher Hagerman
Common Stock	Acquisiton	2015-04-20	37,898	$0.00	37,898	No	4	C	Indirect	By Phan Rogers Trust
Common Stock	Acquisiton	2015-04-20	14,400	$0.00	52,298	No	4	C	Indirect	By Phan Rogers Trust
Common Stock	Acquisiton	2015-04-20	18,949	$0.00	18,949	No	4	C	Indirect	By Joseph Rogers
Common Stock	Acquisiton	2015-04-20	7,200	$0.00	26,149	No	4	C	Indirect	By Joseph Rogers

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	P	Direct
No	4	C	Indirect	By Buchholz Rogers Family Living Trust 2012
No	4	C	Indirect	By Buchholz Rogers Family Living Trust 2012
No	4	C	Indirect	By Christopher Hagerman
No	4	C	Indirect	By Christopher Hagerman
No	4	C	Indirect	By Phan Rogers Trust
No	4	C	Indirect	By Phan Rogers Trust
No	4	C	Indirect	By Joseph Rogers
No	4	C	Indirect	By Joseph Rogers

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A Preferred Stock	Disposition	2015-04-20	14,400	$0.00	14,400	$0.00
Common Stock	Series A-1 Preferred Stock	Disposition	2015-04-20	543,988	$0.00	543,988	$0.00
Common Stock	Series B Preferred Stock	Disposition	2015-04-20	2,193,460	$0.00	2,193,460	$0.00
Common Stock	Series C Preferred Stock	Disposition	2015-04-20	2,847,774	$0.00	2,847,774	$0.00
Common Stock	Series D Preferred Stock	Disposition	2015-04-20	231,171	$0.00	231,171	$0.00
Series B Preferred Stock	Series B Preferred Stock Warrant (right to buy)	Disposition	2015-04-20	11,815	$0.00	8,506	$1.19
Common Stock	Common Stock Warrant (right to buy)	Acquisiton	2015-04-20	8,506	$0.00	8,506	$1.66
Common Stock	Series C Preferred Stock	Disposition	2015-04-20	37,898	$0.00	37,898	$0.00
Common Stock	Series D Preferred Stock	Disposition	2015-04-20	14,400	$0.00	14,400	$0.00
Common Stock	Series C Preferred Stock	Disposition	2015-04-20	18,949	$0.00	18,949	$0.00
Common Stock	Series D Preferred Stock	Disposition	2015-04-20	7,200	$0.00	7,200	$0.00
Common Stock	Series C Preferred Stock	Disposition	2015-04-20	37,898	$0.00	37,898	$0.00
Common Stock	Series D Preferred Stock	Disposition	2015-04-20	14,400	$0.00	14,400	$0.00
Common Stock	Series C Preferred Stock	Disposition	2015-04-20	18,949	$0.00	18,949	$0.00
Common Stock	Series D Preferred Stock	Disposition	2015-04-20	7,200	$0.00	7,200	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	C	Direct
0			No	4	C	Direct
0			No	4	C	Direct
0			No	4	C	Direct
0			No	4	C	Direct
0	2011-04-15	2016-04-15	No	4	D	Direct
8,506	2011-04-15	2016-04-15	No	4	A	Direct
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect
0			No	4	C	Indirect

Footnotes

Each share of Series A Preferred Stock, Series A-1 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, and Series D Preferred Stock automatically converted into 0.72 of a share of common stock immediately prior to the closing of the Issuer's initial public offering, and has no expiration date.
The securities are held by Buchholz Rogers Family Living Trust 2012, over which John E. Rogers exercises voting control.
The securities are held by Christopher Hagerman, over which John E. Rogers exercises voting control.
The securities are held by Phan Rogers Trust, over which John E. Rogers exercises voting control.
The securities are held by Joseph Rogers, over which John E. Rogers exercises voting control.
Pursuant to the terms of the Series B Preferred Stock Warrant (the "Old Warrant"), effective upon conversion of all outstanding shares of Series B Preferred Stock of the Issuer, the Old Warrant converts into a Warrant to purchase shares of Common Stock of the Issuer (the "New Warrant"). The two transactions reported in Table II above show the cancellation of the Old Warrant and acquisition of the New Warrant in connection with the automatic conversion of the Series B Preferred Stock into 0.72 of a share of common stock immediately prior to the closing of the Issuer's initial public offering.