Sec Form 13G Filing - BERKSHIRE HATHAWAY INC @ LIBERTY MEDIA CORPORATION

Insider filing report for Changes in Beneficial Ownership

Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.

"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 13G

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO § 240.13d-2

(Amendment No. 3)

LIBERTY MEDIA CORPORATION

(Name of Issuer)

SERIES C SIRIUSXM COMMON STOCK

(Title of Class of Securities)

531229607

(CUSIP Number)

December 31, 2020

(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)

*	The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes.)


13G
CUSIP NO. 531229607		Page 2 of 19 Pages


1	NAME OF REPORTING PERSON Warren E. Buffett
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States Citizen
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 43,208,291
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 43,208,291
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 43,208,291
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not Applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 18.8%
12	TYPE OF REPORTING PERSON IN


13G
CUSIP NO. 531229607		Page 3 of 19 Pages


1	NAME OF REPORTING PERSON Berkshire Hathaway Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 43,208,291
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 43,208,291
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 43,208,291
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 18.8%
12	TYPE OF REPORTING PERSON HC, CO


13G
CUSIP NO. 531229607		Page 4 of 19 Pages


1	NAME OF REPORTING PERSON National Indemnity Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 27,779,489
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 27,779,489
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 27,779,489
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 12.1%
12	TYPE OF REPORTING PERSON IC, CO


13G
CUSIP NO. 531229607		Page 5 of 19 Pages


1	NAME OF REPORTING PERSON National Fire & Marine Insurance Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 650,480
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 650,480
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 650,480
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.3%
12	TYPE OF REPORTING PERSON IC, CO


13G
CUSIP NO. 531229607		Page 6 of 19 Pages


1	NAME OF REPORTING PERSON GEICO Corporation
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 22,030,333
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 22,030,333
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 22,030,333
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 9.6%
12	TYPE OF REPORTING PERSON HC, CO


13G
CUSIP NO. 531229607		Page 7 of 19 Pages


1	NAME OF REPORTING PERSON Government Employees Insurance Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 16,934,424
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 16,934,424
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 16,934,424
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.4%
12	TYPE OF REPORTING PERSON IC, CO


13G
CUSIP NO. 531229607		Page 8 of 19 Pages


1	NAME OF REPORTING PERSON GEICO Indemnity Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 4,378,131
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 4,378,131
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,378,131
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 1.9%
12	TYPE OF REPORTING PERSON IC, CO


13G
CUSIP NO. 531229607		Page 9 of 19 Pages


1	NAME OF REPORTING PERSON GEICO Advantage Insurance Company
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 717,778
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 717,778
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 717,778
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.3%
12	TYPE OF REPORTING PERSON IC, CO


13G
CUSIP NO. 531229607		Page 10 of 19 Pages


1	NAME OF REPORTING PERSON Berkshire Hathaway Consolidated Pension Plan Master Trust
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Nebraska
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 9,364,979
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 9,364,979
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9,364,979
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 4.1%
12	TYPE OF REPORTING PERSON EP


13G
CUSIP NO. 531229607		Page 11 of 19 Pages


1	NAME OF REPORTING PERSON BNSF Master Retirement Trust
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Texas
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 3,014,156
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 3,014,156
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,014,156
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not Applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 1.3%
12	TYPE OF REPORTING PERSON EP


13G
CUSIP NO. 531229607		Page 12 of 19 Pages


1	NAME OF REPORTING PERSON Scott Fetzer Collective Investment Trust
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Ohio
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 200,000
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 200,000
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 200,000
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not Applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.1%
12	TYPE OF REPORTING PERSON EP


13G
CUSIP NO. 531229607		Page 13 of 19 Pages


1	NAME OF REPORTING PERSON Precision Castparts Corp. Master Trust
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION State of Oregon
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER NONE
		6	SHARED VOTING POWER 2,199,187
		7	SOLE DISPOSITIVE POWER NONE
		8	SHARED DISPOSITIVE POWER 2,199,187
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,199,187
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not Applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 1.0%
12	TYPE OF REPORTING PERSON EP


13G
CUSIP NO. 531229607		Page 14 of 19 Pages


1	NAME OF REPORTING PERSON R. Ted Weschler
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☒ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States Citizen
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 655,808
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 655,808
		8	SHARED DISPOSITIVE POWER 18,887
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 674,695
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ☐ Not Applicable.
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.3%
12	TYPE OF REPORTING PERSON IN

Page 15 of 19 Pages

SCHEDULE 13G

Item 1.

(a)

Name of Issuer

LIBERTY MEDIA CORPORATION

(b)

Address of Issuer’s Principal Executive Offices

12300 Liberty Boulevard, Englewood, CO 80112

Item 2(a).

Name of Person Filing:

Item 2(b).

Address of Principal Business Office:

Item 2(c).

Citizenship:


Warren E. Buffett 3555 Farnam Street Omaha, Nebraska 68131 United States Citizen		Berkshire Hathaway Inc. 3555 Farnam Street Omaha, Nebraska 68131 Delaware corporation

National Indemnity Company 3024 Harney Street Omaha, Nebraska 68131 Nebraska corporation		GEICO Corporation One GEICO Plaza Washington, DC 20076 Delaware corporation

Government Employees Insurance Company One GEICO Plaza Washington, DC 20076 Nebraska corporation		National Fire & Marine Insurance Company 1314 Douglas Street Omaha, NE 68102 Nebraska corporation

GEICO Indemnity Company One GEICO Plaza Washington, DC 20076 Nebraska corporation		GEICO Advantage Insurance Company One GEICO Plaza Washington, DC 20076 Nebraska corporation

Berkshire Hathaway Consolidated Pension Plan Master Trust c/o Berkshire Hathaway Inc. 3555 Farnam Street Omaha, Nebraska 68131 Nebraska

Page 16 of 19 Pages


BNSF Master Retirement Trust c/o BNSF Railway Company 2650 Lou Menk Drive Fort Worth, TX 76131 Texas		R. Ted Weschler 404 East Main Street Charlottesville, VA 22902 United States Citizen

Precision Castparts Corp. Master Trust c/o Precision Castparts Corp. 4650 SW Macadam Ave. Suite 400 Portland, OR 97239 Oregon

Scott Fetzer Collective Investment Trust c/o Scott Fetzer Co. 28800 Clemens Road Westlake, OH 44145 Delaware corporation

Page 17 of 19 Pages

(d)

Title of Class of Securities

Class A Common Stock

(e)

CUSIP Number

531229607

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:

Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.), Berkshire Hathaway Inc. and GEICO Corporation are each a Parent Holding Company or Control Person, in accordance with § 240.13d-1(b)(1)(ii)(G).

National Indemnity Company, Government Employees Insurance Company, GEICO Indemnity Company, GEICO Advantage Insurance Company and National Fire & Marine Insurance Company are each an Insurance Company as defined in section 3(a)(19) of the Act.

BNSF Master Retirement Trust, Berks hire Hathaway Consolidated Pension Plan Master Trust, Precision Castparts Corp. Master Trust and Scott Fetzer Collective Investment Trust are each an Employee Benefit Plan in accordance with § 240.13d-1(b)(1)(ii)(F).

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially Owned

See the Cover Pages for each of the Reporting Persons.

(b)

Percent of Class

See the Cover Pages for each of the Reporting Persons.

(c)

Number of shares as to which such person has:

(i)

sole power to vote or to direct the vote

(ii)

shared power to vote or to direct the vote

(iii)

sole power to dispose or to direct the disposition of

(iv)

shared power to dispose or to direct the disposition of

See the Cover Pages for each of the Reporting Persons.

Item 5.

Ownership of Five Percent or Less of a Class.

Not Applicable.

Item 6.

Ownership of More than Five 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.

See Exhibit A.

Page 18 of 19 Pages

Item 8.

Identification and Classification of Members of the Group.

See Exhibit A.

Item 9.

Notice of Dissolution of Group.

Not Applicable.

Item 10.

Certification.

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.

Page 19 of 19 Pages

SIGNATURES

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.

Dated this 16^th day of February, 2021


/s/ Warren E. Buffett
Warren E. Buffett

BERKSHIRE HATHAWAY INC.

By:		/s/ Warren E. Buffett
		Warren E. Buffett
		Chairman of the Board

NATIONAL INDEMNITY COMPANY, GEICO CORPORATION, GOVERNMENT EMPLOYEES INSURANCE COMPANY, GEICO INDEMNITY COMPANY, GEICO ADVANTAGE INSURANCE COMPANY, NATIONAL FIRE & MARINE INSURANCE COMPANY, BNSF MASTER RETIREMENT TRUST, BERKSHIRE HATHAWAY CONSOLIDATED PENSION PLAN MASTER TRUST, PRECISION CASTPARTS CORP. MASTER TRUST AND SCOTT FETZER COLLECTIVE INVESTMENT TRUST

By:		/s/ Warren E. Buffett
		Warren E. Buffett Attorney-in-Fact

By:		/s/ R. Ted Weschler
		R. Ted Weschler

SCHEDULE 13G

EXHIBIT A

RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP

PARENT HOLDING COMPANIES OR CONTROL PERSONS:

Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.)

Berkshire Hathaway Inc.

GEICO Corporation

INSURANCE COMPANIES AS DEFINED IN SECTION 3(a)(19) OF THE ACT:

National Indemnity Company

Gove rnment Employees Insurance Company

GEICO Indemnity Company

GEICO Advantage Insurance Company

National Fire & Marine Insurance Company

EMPLOYEE BENEFIT PLANS IN ACCORDANCE WITH § 240.13d-1-(b)(1)(ii)(F)

BNSF Master Retirement Trust

Berkshire Hathaway Consolidated Pension Plan Master Trust

Precision Castparts Corp. Master Trust

Scott Fetzer Collective Investment Trust

OTHER MEMBER OF FILING GROUP

R. Ted Weschler

SCHEDULE 13G

EXHIBIT B

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

The undersigned persons hereby agree that reports on Schedule 13G, and amendments thereto, with respect to the Series C SiriusXM Common Stock of Liberty Media Corporation may be filed in a single statement on behalf of each of such persons, and further, each of such persons designates Warren E. Buffett as its agent and Attorney-in-Fact for the purpose of executing any and all Schedule 13G filings required to be made by it with the Securities and Exchange Commission.


Dated: February 16, 2021	/s/ Warren E. Buffett
	Warren E. Buffett

	Berkshire Hathaway Inc.

Dated: February 16, 2021	/s/ Warren E. Buffett
	By:	Warren E. Buffett
	Title:	Chairman of the Board

	National Indemnity Company

Dated: February 16, 2021	/s/ Marc D. Hamburg
	By:	Marc D. Hamburg
	Title:	Chairman of the Board

	GEICO Corporation

Dated: February 16, 2021	/s/ Todd A. Combs
	By:	Todd A. Combs
	Title:	President

	Government Employees Insurance Company

Dated: February 16, 2021	/s/ Todd A. Combs
	By:	Todd A. Combs
	Title:	President

	GEICO Advantage Insurance Company

Dated: February 16, 2021	/s/ Todd A. Combs
	By:	Todd A. Combs
	Title:	President


	National Fire & Marine Insurance Company

Dated: February 16, 2021	/s/ Marc D. Hamburg
	By:	Marc D. Hamburg
	Title:	Chairman of the Board

	GEICO Indemnity Company

Dated: February 16, 2021	/s/ Todd A. Combs
	By:	Todd A. Combs
	Title:	President

	Berkshire Hathaway Consolidated Pension Plan Master Trust

Dated: February 16, 2021	/s/ Mark D. Millard
	By:	Mark D. Millard
	Title:	Vice President, Berkshire Hathaway Inc.

	Scott Fetzer Collective Investment Trust

Dated: February 16, 2021	/s/ Robert McBride
	By:	Robert McBride
	Title:	President, Scott Fetzer Company

	BNSF Master Retirement Trust

Dated: February 16, 2021	/s/ Julie Piggott
	By:	Julie Piggott
	Title:	Vice President, Burlington Northern Santa Fe, LLC

	Precision Castparts Corp. Master Trust

Dated: February 16, 2021	/s/ Shawn Hagel
	By:	Shawn Hagel
	Title:	Executive Vice President and Chief Financial Officer, Precision Castparts Corp.

Dated: February 16, 2021	/s/ R. Ted Weschler
	R. Ted Weschler

Sec Form 13G Filing - BERKSHIRE HATHAWAY INC (BRK-A) filing for LIBERTY MEDIA CORPORATION (FWONK) - 2021-02-16