SEC Form SC 13G/A filed by TransAlta Corporation (Amendment)

TransAlta Corporation

(Name of Issuer)

Common Shares

(Title of Class of Securities)

89346D107

(CUSIP Number)

December 31, 2022

(Date of Event Which Requires Filing of this Statement)

Item 1(a).

Name of Issuer:

Item 1(b).

Address of Issuer's Principal Executive Offices:

Item 2(a).

Name of Person Filing:

Item 2(b).

Address of Principal Business Office or, if none, Residence:

Item 2(c).

Citizenship:

Item 2(d).

Title of Class of Securities:

Item 2(e).

CUSIP Number:

Item 3.

If This Statement Is Filed Pursuant to Sections 240.13d-1(b) or 240.13d-2(b) or (c), Check Whether the Person Filing Is a(n):

(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)

☐ Investment adviser in accordance with Section 240.13d-1(b)(1)(ii)(E);

(f)

☐ Employee benefit plan or endowment fund in accordance with Section 240.13d-1(b)(1)(ii)(F);

(g)

☐ Parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G);

(h)

☐ Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(j)

☐ A non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J);

(k)

☐ Group, in accordance with Section 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

Item 4.

Ownership.

(b)

Percent of class: 5.5%2

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote: 15,033,000

(ii)

Shared power to vote or to direct the vote: 0

(iii)

Sole power to dispose or to direct the disposition of: 15,033,000

(iv)

Shared power to dispose or to direct the disposition of: 0

Item 5.

Ownership of Five Percent or Less of a Class.

Item 6.

Ownership of More Than Five Percent on Behalf of Another Person.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company.

Item 8.

Identification and Classification of Members of the Group.

Item 9.

Notice of Dissolution of Group.

Item 10.

Certification.

	MARQUARD & BAHLS AG
	By:	/s/ Stefan J. Schaefers
		Name: Stefan J. Schaefers
		Title: General Counsel

	By:	/s/ Irina Grigorenko
		Name: Irina Grigorenko
		Title: Chief Investment Officer