Twist Bioscience: ARK reports 5.11% stake

Twist Bioscience Corp (TWST) received an updated Schedule 13G/A (Amendment No. 10) from ARK Investment Management LLC and its CEO/CIO Catherine D. Wood, reporting their beneficial ownership of the company’s common stock.

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) received an updated Schedule 13G/A (Amendment No. 10) from ARK Investment Management LLC and its CEO/CIO Catherine D. Wood, reporting their beneficial ownership of the company’s common stock.

As of August 31, 2026, ARK and Catherine D. Wood report beneficial ownership of 3,385,850 shares of Twist Bioscience common stock, representing 5.11% of the outstanding class. ARK reports sole voting power over 3,228,258 shares and shared voting power over 44,747 shares. ARK also reports sole dispositive power over 3,385,850 shares. Catherine D. Wood reports shared voting power over 3,273,005 shares and shared dispositive power over 3,385,850 shares, with no sole voting or dispositive power.

Key Figures

Shares beneficially owned: 3,385,850 shares Percent of class: 5.11% Sole voting power (ARK): 3,228,258 shares +4 more

7 metrics

Shares beneficially owned 3,385,850 shares Twist Bioscience common stock beneficially owned by ARK and Catherine D. Wood as of August 31, 2026

Percent of class 5.11% Portion of Twist Bioscience common stock class beneficially owned by ARK and Catherine D. Wood

Sole voting power (ARK) 3,228,258 shares Shares of Twist Bioscience over which ARK has sole voting power

Shared voting power (ARK) 44,747 shares Shares of Twist Bioscience over which ARK has shared voting power

Sole dispositive power (ARK) 3,385,850 shares Shares of Twist Bioscience over which ARK has sole dispositive power

Shared voting power (Catherine D. Wood) 3,273,005 shares Shares of Twist Bioscience over which Catherine D. Wood has shared voting power

Shared dispositive power (Catherine D. Wood) 3,385,850 shares Shares of Twist Bioscience over which Catherine D. Wood has shared dispositive power

Key Terms

Schedule 13G/A, beneficial ownership, sole voting power, shared voting power, +2 more

6 terms

Schedule 13G/A regulatory

"received an updated Schedule 13G/A (Amendment No. 10) from ARK"

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.

beneficial ownership financial

"reporting their beneficial ownership of the company’s common stock"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

sole voting power financial

"ARK reports sole voting power over 3,228,258 shares"

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

"shared voting power over 44,747 shares"

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

"ARK also reports sole dispositive power over 3,385,850 shares"

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

"shared dispositive power over 3,385,850 shares"

FAQ

What ownership stake in TWST does ARK Investment Management report in this Schedule 13G/A?

ARK Investment Management LLC and Catherine D. Wood report beneficial ownership of 3,385,850 shares of Twist Bioscience Corp common stock, representing 5.11% of the outstanding class as of August 31, 2026.

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

The reporting persons are ARK Investment Management LLC and Catherine D. Wood. ARK is organized in Delaware, and Catherine D. Wood is a United States citizen, with their principal office at 200 Central Avenue, St. Petersburg, Florida.

How many TWST shares does ARK have sole voting power over?

ARK Investment Management LLC reports sole voting power over 3,228,258 shares of Twist Bioscience common stock and shared voting power over 44,747 shares as of August 31, 2026.

What voting and dispositive powers over TWST shares does Catherine D. Wood report?

Catherine D. Wood reports no sole voting or dispositive power. She reports shared voting power over 3,273,005 shares and shared dispositive power over 3,385,850 shares of Twist Bioscience common stock.

What is the total number of TWST shares beneficially owned according to this filing?

ARK Investment Management LLC and Catherine D. Wood together report 3,385,850 shares beneficially owned of Twist Bioscience common stock, corresponding to 5.11% of the class.

When is the ownership information for TWST in this Schedule 13G/A stated as of?

The ownership information—3,385,850 shares and 5.11% of Twist Bioscience’s common stock—is stated as of August 31, 2026, with the amendment signed on September 8, 2026.

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

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Available on EDGAR 09/08/2026 - 01:22 PM Accepted by SEC EDGAR 09/08/2026 - 01:22 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 10)

Twist Bioscience Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

90184D100

(CUSIP Number)

08/31/2026

(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 3,228,258.00
6	Shared Voting Power 44,747.00
7	Sole Dispositive Power 3,385,850.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,385,850.00

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)

5.11 %

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 3,273,005.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,385,850.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,385,850.00

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)

5.11 %

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: 3,385,850
(b)	Percent of class: ARK and Catherine D. Wood: 5.11
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: (i) ARK: 3,228,258 (ii) Catherine D. Wood: 0
	(ii) Shared power to vote or to direct the vote: (i) ARK: 44,747 (ii) Catherine D. Wood: 3,273,005
	(iii) Sole power to dispose or to direct the disposition of: (i) ARK: 3,385,850 (ii) Catherine D. Wood: 0
	(iv) Shared power to dispose or to direct the disposition of: (i) ARK: 0 (ii) Catherine D. Wood: 3,385,850
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:	09/08/2026

Catherine D. Wood

Signature:	/s/ Catherine D. Wood
Name/Title:	Catherine D. Wood, Chief Executive Officer, Chief Investment Officer
Date:	09/08/2026