Autolus: MAK Group Reports 12.6% Stake

Autolus Therapeutics plc ownership update: MAK Capital Fund LP, MAK Capital One L.L.C. and Michael A. Kaufman report beneficial ownership of 33,621,487 ADS (each ADS represents one ordinary share), equal to 12.6% of the outstanding ordinary shares.

Rhea-AI Filing Summary

Autolus Therapeutics plc ownership update: MAK Capital Fund LP, MAK Capital One L.L.C. and Michael A. Kaufman report beneficial ownership of 33,621,487 ADS (each ADS represents one ordinary share), equal to 12.6% of the outstanding ordinary shares. The percent calculation is based on 266,155,786 ordinary shares outstanding as of May 13, 2026, as reported in the issuer's Form 10-Q. The filing shows shared voting and dispositive power over the 33,621,487 ADS and is signed by Michael A. Kaufman.

Insights

Institutional Ownership Analyst

MAK group discloses a 12.6% beneficial stake in Autolus.

The filing reports 33,621,487 ADS held with shared voting and dispositive power, calculated against May 13, 2026 outstanding shares of 266,155,786. This disclosure clarifies ownership and control structure for regulatory and market transparency.

Timing and cash‑flow treatment are not stated in the excerpt; subsequent filings would show any transactional activity. Market impact depends on whether the holders trade or engage with the company.

Key Figures

Beneficial ownership: 33,621,487 ADS Percent of class: 12.6% Shares outstanding (as of): 266,155,786 ordinary shares +1 more

4 metrics

Beneficial ownership 33,621,487 ADS reported beneficially owned amount

Percent of class 12.6% percentage of ordinary shares outstanding

Shares outstanding (as of) 266,155,786 ordinary shares outstanding as of May 13, 2026

Nominal value per ordinary share $0.000042 per share ordinary share par value stated in filing

Key Terms

ADS, Beneficial ownership, Shared dispositive power, Schedule 13G/A

4 terms

ADS financial

"Each ADS represents one Ordinary Share"

Ads are paid promotional messages a company places across media — online, on TV, in print, or on social platforms — to attract customers, explain products, or shape public perception. For investors, ads matter because they drive sales growth, affect how much a company must spend to win customers, and influence brand strength and long-term value. Ads can also create regulatory or reputational risk if claims are misleading, which can affect profits and stock price.

Beneficial ownership regulatory

"Amount beneficially owned: 33,621,487"

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.

Shared dispositive power regulatory

"Shared Dispositive Power 33,621,487.00"

Schedule 13G/A regulatory

"This /A is being filed by: i. MAK Capital Fund LP"

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.

What stake does MAK Capital hold in Autolus (AUTL)?

MAK Capital and related entities report beneficial ownership of 33,621,487 ADS, representing 12.6% of Autolus ordinary shares based on 266,155,786 shares outstanding as of May 13, 2026.

Do the reporting persons have voting control over the shares?

The filing states the reporting persons have shared voting power and shared dispositive power over 33,621,487 ADS; sole voting and dispositive power are reported as 0.

How is an ADS defined in this filing for AUTL?

Each American Depositary Share (ADS) represents one ordinary share of Autolus, nominal value $0.000042 per share, as stated in the filing's security description.

On what date is the outstanding share count based?

The percent calculation uses 266,155,786 ordinary shares outstanding as of May 13, 2026, reported by the issuer in its Form 10-Q filed on that date.

Who signed the Schedule 13G/A for this filing?

The filing is signed by Michael A. Kaufman in the capacity of Managing Member and as an individual, with signature dates shown as 05/15/2026.

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

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Accepted by SEC EDGAR 05/15/2026 - 03:04 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. 3)

Autolus Therapeutics plc

(Name of Issuer)

Ordinary Shares, nominal value $0.000042 per share, and American Depositary Shares ("ADS"). Each ADS represents one Ordinary Share

(Title of Class of Securities)

05280R100

(CUSIP Number)

03/31/2026

(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): 05280R100

1

Names of Reporting Persons

MAK Capital Fund LP

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

BERMUDA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 33,621,487.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 33,621,487.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

33,621,487.00

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)

12.6 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: For Item 9: Represents 33,621,487 American Depositary Shares ("ADS"), each representing one ordinary share, par value $0.000042 per share. For Item 11: The calculation is based upon 266,155,786 ordinary shares (including shares in the form of ADS), nominal value $0.000042 per share, outstanding as of May 13, 2026, as reported by the Issuer on its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 13, 2026.

SCHEDULE 13G

CUSIP Number(s): 05280R100

1

Names of Reporting Persons

MAK CAPITAL ONE 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 0.00
6	Shared Voting Power 33,621,487.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 33,621,487.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

33,621,487.00

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)

12.6 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: For Item 9: Represents 33,621,487 American Depositary Shares ("ADS"), each representing one ordinary share, par value $0.000042 per share. For Item 11: The calculation is based upon 266,155,786 ordinary shares (including shares in the form of ADS), nominal value $0.000042 per share, outstanding as of May 13, 2026, as reported by the Issuer on its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 13, 2026.

SCHEDULE 13G

CUSIP Number(s): 05280R100

1

Names of Reporting Persons

Kaufman Michael A

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 33,621,487.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 33,621,487.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

33,621,487.00

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)

12.6 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: For Item 9: Represents 33,621,487 American Depositary Shares ("ADS"), each representing one ordinary share, par value $0.000042 per share. For Item 11: The calculation is based upon 266,155,786 ordinary shares (including shares in the form of ADS), nominal value $0.000042 per share, outstanding as of May 13, 2026, as reported by the Issuer on its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 13, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Autolus Therapeutics plc
(b)	Address of issuer's principal executive offices: THE MEDIAWORKS, 191 WOOD LANE, LONDON, UNITED KINGDOM, W12 7FP.
Item 2.
(a)	Name of person filing: This Schedule 13G/A is being filed by: i. MAK Capital Fund LP ("MAK Fund") ii. MAK Capital One L.L.C. ("MAK Capital"); and iii. Michael A. Kaufman ("Mr. Kaufman," and collectively with MAK Fund and MAK Capital, the "Reporting Persons")
(b)	Address or principal business office or, if none, residence: The principal business address of (i) MAK Fund is c/o Wakefield Quin, Victoria Place, 31 Victoria Street, Bermuda; and (ii) MAK Capital and Mr. Kaufman is 590 Madison Avenue, 31st Floor, New York, NY 10022.
(c)	Citizenship: MAK Capital Fund LP is a Bermuda limited partnership. MAK Capital One L.L.C. is a Delaware limited liability company. Mr. Kaufman is a United States citizen.
(d)	Title of class of securities: Ordinary Shares, nominal value $0.000042 per share, and American Depositary Shares ("ADS"). Each ADS represents one Ordinary Share
(e)	CUSIP No.: 05280R100
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: 33,621,487
(b)	Percent of class: 12.6% The calculation is based upon 266,155,786 ordinary shares (including shares in the form of ADS), nominal value $0.000042 per share, outstanding as of May 13, 2026, as reported by the Issuer on its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 13, 2026.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 33,621,487
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 33,621,487
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 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.

MAK Capital Fund LP

Signature:	/s/ Michael A. Kaufman
Name/Title:	Managing Member
Date:	05/15/2026

MAK CAPITAL ONE LLC

Signature:	/s/ Michael A. Kaufman
Name/Title:	Managing Member
Date:	05/15/2026

Kaufman Michael A

Signature:	/s/ Michael A. Kaufman
Name/Title:	Michael A. Kaufman
Date:	05/15/2026