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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1581280	Twist Bioscience Corp	TWST	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1219039	Keith Crandell	8755 W. Higgins Road, Suite 1025 Chicago IL 60631		No	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	Disposition	2020-08-18	685,613	$0.00	1,721,809	No	4	J	Indirect	By Arch Venture Fund VII, L.P.
Common Stock	Acquisiton	2020-08-18	34,845	$0.00	34,845	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-08-18	248,083	$0.00	706,063	No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
Common Stock	Acquisiton	2020-08-18	3	$0.00	34,848	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-09-02	497,032	$0.00	1,224,777	No	4	J	Indirect	By Arch Venture Fund VII, L.P.
Common Stock	Acquisiton	2020-09-02	25,261	$0.00	60,109	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-09-02	220,641	$0.00	485,422	No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
Common Stock	Acquisiton	2020-09-02	3	$0.00	60,112	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-09-15	444,231	$0.00	780,546	No	4	J	Indirect	By Arch Venture Fund VII, L.P.
Common Stock	Acquisiton	2020-09-15	22,578	$0.00	82,690	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-09-15	176,030	$0.00	309,392	No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
Common Stock	Acquisiton	2020-09-15	2	$0.00	82,692	No	4	J	Indirect	By Keith L.Crandall Trust
Common Stock	Disposition	2020-12-07	53,712	$103.40	726,834	No	4	S	Indirect	By Arch Venture Fund VII, L.P.
Common Stock	Disposition	2020-12-07	21,288	$103.40	288,104	No	4	S	Indirect	By ARCH Venture Fund VIII Overage, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	J	Indirect	By Arch Venture Fund VII, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	J	Indirect	By Arch Venture Fund VII, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	J	Indirect	By Arch Venture Fund VII, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	J	Indirect	By ARCH Venture Fund VIII Overage, L.P.
No	4	J	Indirect	By Keith L.Crandall Trust
No	4	S	Indirect	By Arch Venture Fund VII, L.P.
No	4	S	Indirect	By ARCH Venture Fund VIII Overage, L.P.

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,412	Direct

Footnotes

Pro-rata distribution of Common Stock held by a limited partnership to its partners for no consideration.
The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). The sole general partner of ARCH Overage is ARCH Venture Partners VIII, LLC ("AVP GPLLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Keith Crandell is a managing director of ARCH VII LLC and ARCH VIII LLC, and may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Mr. Crandell disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Change in form of ownership of shares previously reported as beneficially owned by the reporting person.