ARK discloses 7.31% stake in Twist Bioscience

ARK Investment Management LLC and its founder Catherine D. Wood report beneficial ownership of 4,549,803 shares of Twist Bioscience Corp common stock, representing 7.31% of the class.

Rhea-AI Filing Summary

ARK Investment Management LLC and its founder Catherine D. Wood report beneficial ownership of 4,549,803 shares of Twist Bioscience Corp common stock, representing 7.31% of the class.

ARK has sole voting power over 4,254,988 shares and shared voting power over 58,669 shares. It also has sole dispositive power over 4,549,803 shares. Catherine D. Wood has shared voting power over 4,313,657 shares and shared dispositive power over 4,549,803 shares, with no sole voting or dispositive power.

Key Figures

Beneficially owned shares: 4,549,803 shares Percent of class owned: 7.31% ARK sole voting power: 4,254,988 shares +4 more

7 metrics

Beneficially owned shares 4,549,803 shares Shares of Twist Bioscience common stock beneficially owned by ARK and Catherine D. Wood

Percent of class owned 7.31% Percentage of Twist Bioscience common stock class owned by ARK and Catherine D. Wood

ARK sole voting power 4,254,988 shares Shares over which ARK has sole power to vote or direct the vote

ARK shared voting power 58,669 shares Shares over which ARK has shared power to vote or direct the vote

ARK sole dispositive power 4,549,803 shares Shares over which ARK has sole power to dispose or direct disposition

Catherine Wood shared voting power 4,313,657 shares Shares over which Catherine D. Wood has shared power to vote or direct the vote

Catherine Wood shared dispositive power 4,549,803 shares Shares over which Catherine D. Wood has shared power to dispose or direct disposition

Key Terms

beneficially owned, sole voting power, shared voting power, sole dispositive power, +2 more

6 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: ARK and Catherine D. Wood: 4,549,803"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"Number of shares as to which the person has | (i) Sole power to vote"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

shared voting power financial

"| (ii) Shared power to vote or to direct the vote:"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

sole dispositive power financial

"| (iii) Sole power to dispose or to direct the disposition of:"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

shared dispositive power financial

"| (iv) Shared power to dispose or to direct the disposition of:"

Schedule 13G/A regulatory

"form_type: "SCHEDULE 13G/A""

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Twist Bioscience (TWST) shares does ARK Investment Management report owning?

ARK Investment Management and Catherine D. Wood report beneficial ownership of 4,549,803 TWST shares. This position reflects their aggregate holdings of Twist Bioscience common stock as disclosed in the Schedule 13G/A.

What percentage of Twist Bioscience (TWST) is held by ARK Investment Management and Catherine Wood?

ARK Investment Management and Catherine D. Wood report owning 7.31% of Twist Bioscience’s common stock. This percentage represents their beneficial ownership relative to the company’s outstanding common shares.

What voting power does ARK Investment Management have in Twist Bioscience (TWST)?

ARK Investment Management reports sole voting power over 4,254,988 TWST shares and shared voting power over 58,669 shares. These figures describe how many shares ARK can vote independently versus jointly.

What is Catherine D. Wood’s role in the Twist Bioscience (TWST) share holdings?

Catherine D. Wood reports shared voting power over 4,313,657 TWST shares and shared dispositive power over 4,549,803 shares. She has no sole voting or sole dispositive power over Twist Bioscience shares.

Who are the reporting persons for the Twist Bioscience (TWST) Schedule 13G/A?

The reporting persons are ARK Investment Management LLC and Catherine D. Wood. ARK is organized in Delaware, and Catherine D. Wood is a citizen of the United States, both reporting beneficial ownership in Twist Bioscience.

What type of security does ARK hold in Twist Bioscience (TWST)?

ARK Investment Management and Catherine D. Wood report holdings in Twist Bioscience common stock. The security class is common stock, identified by CUSIP 90184D100 in the Schedule 13G/A.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/14/2026 - 03:02 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 9)

Twist Bioscience Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

90184D100

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 90184D100

1

Names of Reporting Persons

ARK Investment Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 4,254,988.00
6	Shared Voting Power 58,669.00
7	Sole Dispositive Power 4,549,803.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,549,803.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.31 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 90184D100

1

Names of Reporting Persons

Catherine D. Wood

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,313,657.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,549,803.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,549,803.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.31 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Twist Bioscience Corp
(b)	Address of issuer's principal executive offices: 681 Gateway Blvd, South San Francisco, CA 94080
Item 2.
(a)	Name of person filing: (i) ARK Investment Management LLC ("ARK") (ii) Catherine D. Wood
(b)	Address or principal business office or, if none, residence: ARK and Catherine D. Wood: 200 Central Avenue, St. Petersburg, FL 33701
(c)	Citizenship: (i) ARK: Delaware (ii) Catherine D. Wood: United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 90184D100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: ARK and Catherine D. Wood: 4,549,803
(b)	Percent of class: ARK and Catherine D. Wood: 7.31
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: (i) ARK: 4,254,988 (ii) Catherine D. Wood: 0
	(ii) Shared power to vote or to direct the vote: (i) ARK: 58,669 (ii) Catherine D. Wood: 4,313,657
	(iii) Sole power to dispose or to direct the disposition of: (i) ARK: 4,549,803 (ii) Catherine D. Wood: 0
	(iv) Shared power to dispose or to direct the disposition of: (i) ARK: 0 (ii) Catherine D. Wood: 4,549,803
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

ARK Investment Management LLC

Signature:	/s/ Kellen Carter
Name/Title:	Kellen Carter, Chief Compliance Officer
Date:	08/14/2026

Catherine D. Wood

Signature:	/s/ Catherine D. Wood
Name/Title:	Catherine D. Wood, Chief Executive Officer, Chief Investment Officer
Date:	08/14/2026