SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D/A

Under the Securities Exchange Act of 1934
(Amendment No. 10)*

Ultra Petroleum Corp.
(Name of Issuer)

Common Shares, no par value per share
(Title of Class of Securities)

903914208
(CUSIP Number)

Brian Meyer
Fir Tree Capital Management LP
55 West 46th Street, 29th Floor
New York, NY 10036
(212) 599-0090

Eleazer Klein, Esq.
Schulte Roth & Zabel LLP
919 Third Avenue
New York, NY 10022
(212) 756-2000
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

August 18, 2020
(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), Rule 13d-1(f) or Rule 13d-1(g), check the following box. x

(Page 1 of 5 Pages)

______________________________

* 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 ("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).

CUSIP No. 903914208

SCHEDULE 13D/A

Page 2 of 5 Pages

1	NAME OF REPORTING PERSON Fir Tree Capital Management LP (formerly known as Fir Tree Inc.)
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) ¨
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	7	SOLE VOTING POWER 9,357,193 Common Shares
	8	SHARED VOTING POWER -0-
	9	SOLE DISPOSITIVE POWER 9,357,193 Common Shares
	10	SHARED DISPOSITIVE POWER -0-
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 9,357,193 Common Shares
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES			¨
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.69%
14	TYPE OF REPORTING PERSON IA, PN

CUSIP No. 903914208

SCHEDULE 13D/A

Page 3 of 5 Pages

	This Amendment No. 10 ("Amendment No. 10") amends the statement on Schedule 13D filed with the Securities and Exchange Commission (the "SEC") on August 10, 2017 (the "Original Schedule 13D") as amended by Amendment No. 1 filed with the SEC on August 24, 2017 ("Amendment No. 1"), Amendment No. 2 filed with the SEC on September 5, 2017 ("Amendment No. 2"), Amendment No. 3 filed with the SEC on September 18, 2017 ("Amendment No. 3"), Amendment No. 4 filed with the SEC on January 31, 2018 ("Amendment No. 4"), Amendment No. 5 filed with the SEC on February 5, 2018 ("Amendment No. 5"), Amendment No. 6 filed with the SEC on December 12, 2019 ("Amendment No. 6"), Amendment No. 7 filed with the SEC on May 19, 2020 ("Amendment No. 7"), Amendment No. 8 filed with the SEC on June 3, 2020 ("Amendment No. 8") and Amendment No. 9 filed with the SEC on August 17, 2020 ("Amendment No. 9", and the Original Schedule 13D as amended by Amendment No. 1, Amendment No. 2, Amendment No. 3, Amendment No. 4, Amendment No. 5, Amendment No. 6, Amendment No. 7, Amendment No. 8 and this Amendment No. 10, the "Schedule 13D") with respect to the common shares, no par value per share (the "Common Shares"), of Ultra Petroleum Corp., a Canadian corporation (the "Issuer"). Capitalized terms used herein and not otherwise defined in this Amendment No. 10 have the meanings set forth in the Schedule 13D. This Amendment No. 10 amends Items 3 and 5 as set forth below.

Item 3.	SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

	Item 3 of the Schedule 13D is hereby amended and restated in its entirety as follows:

	The Reporting Person used a total of approximately $14,159,563 to acquire the Common Shares reported in this Schedule 13D. The source of the funds used to acquire the Common Shares reported herein is the working capital of the Fir Tree Funds.

Item 5.	INTEREST IN SECURITIES OF THE ISSUER

	Items 5 (a)-(c) and (e) of the Schedule 13D are hereby amended and restated in their entirety as follows:

(a)	See rows (11) and (13) of the cover page to this Schedule 13D for the aggregate number of Common Shares and percentage of the Common Shares beneficially owned by the Reporting Person. The percentage used in this Schedule 13D is calculated based upon 199,713,518 Common Shares outstanding as of July 31, 2020 as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2020 filed with the SEC on August 7, 2020.

(b)	See rows (7) through (10) of the cover page to this Schedule 13D for the number of Common Shares as to which the Reporting Person has the sole or shared power to vote or direct the vote and sole or shared power to dispose or to direct the disposition.

CUSIP No. 903914208

SCHEDULE 13D/A

Page 4 of 5 Pages


(c)	Information concerning transactions in the Common Shares effected by the Reporting Person since the filing of Amendment No. 9 is set forth in Schedule A hereto and is incorporated herein by reference. All of the transactions in the Common Shares listed hereto were effected in the open market through various brokerage entities.

(e)	August 19, 2020

CUSIP No. 903914208

SCHEDULE 13D/A

Page 5 of 5 Pages

SIGNATURES

After reasonable inquiry and to the best of his or its knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct.

Date: August 20, 2020


FIR TREE CAPITAL MANAGEMENT LP


/s/ Brian Meyer
Name: Brian Meyer
Title: General Counsel

Schedule A

This Schedule sets forth information with respect to each purchase and sale of Common Shares (excluding commissions) which were effectuated by the Reporting Person since the filing of Amendment No. 9. All transactions were effectuated in the open market through a broker.

Trade Date	Shares Purchased (Sold)	Price Per Share ($)
08/18/2020	(2,115,378)	0.0100
08/19/2020	(1,899,779)	0.0100

ULTRA PETROLEUM CORP SC 13D/A