Twist Bioscience Corp — Director's Dealing 2021

Nov 4, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Twist Bioscience Corp (TWST)
CIK: 0001581280
Period of Report: 2021-11-02

Reporting Person: Leproust Emily M. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-11-02	Common Stock	M	8866	$8.82	Acquired	180412	Direct
2021-11-02	Common Stock	S	8641	$128.9987	Disposed	171771	Direct
2021-11-02	Common Stock	S	525	$129.9548	Disposed	171246	Direct
2021-11-03	Common Stock	M	5220	$5.95	Acquired	176466	Direct
2021-11-03	Common Stock	M	5584	$8.82	Acquired	182050	Direct
2021-11-03	Common Stock	S	1718	$129.2045	Disposed	180332	Direct
2021-11-03	Common Stock	S	4165	$130.2373	Disposed	176167	Direct
2021-11-03	Common Stock	S	3007	$131.3537	Disposed	173160	Direct
2021-11-03	Common Stock	S	1884	$132.2534	Disposed	171276	Direct
2021-11-03	Common Stock	S	900	$133.3811	Disposed	170376	Direct
2021-11-03	Common Stock	S	1534	$134.3420	Disposed	168842	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-11-02	Employee Stock Option (right to buy)	$8.82	M	8866	Disposed	2027-09-28	Common Stock (8866)	Direct
2021-11-03	Employee Stock Option (right to buy)	$5.95	M	5220	Disposed	2025-09-28	Common Stock (5220)	Direct
2021-11-03	Employee Stock Option (right to buy)	$8.82	M	5584	Disposed	2027-09-28	Common Stock (5584)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Option (right to buy)	$26.66	2028-11-18	Common Stock (0)	266539	Direct
Employee Stock Option (right to buy)	$23.33	2029-10-23	Common Stock (0)	131290	Direct

Footnotes

F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on May 28, 2021.

F2: Represents the weighted average sales price per share. The shares sold at prices ranging from $128.75 to $129.65 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F3: Represents the weighted average sales price per share. The shares sold at prices ranging from $129.87 to $130.03 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4: Represents the weighted average sales price per share. The shares sold at prices ranging from $128.82 to $129.67 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F5: Represents the weighted average sales price per share. The shares sold at prices ranging from $129.83 to $130.795 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F6: Represents the weighted average sales price per share. The shares sold at prices ranging from $130.85 to $131.84 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F7: Represents the weighted average sales price per share. The shares sold at prices ranging from $131.865 to $132.71 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F8: Represents the weighted average sales price per share. The shares sold at prices ranging from $132.89 to $133.595 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F9: Represents the weighted average sales price per share. The shares sold at prices ranging from $134.055 to $134.655 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F10: 20% of the shares subject to the option vested and became exercisable on October 31, 2019 and 1/60th of the shares subject to the option vest and become exercisable on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.

F11: 25% of the shares subject to the option vested on October 24, 2020, and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.

F12: The option is immediately exercisable. 25% of the shares subject to the option vested on September 1, 2016 and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.

F13: The option is immediately exercisable. 10% of the shares subject to the option vested on September 28, 2017, 15% of the shares subject to the option vested on September 28, 2018, and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.