EXHIBIT 2

CUSIP No. 68634K106

AGREEMENT CONCERNING JOINT FILING OF SCHEDULE 13G

The undersigned agree as follows:

(i)each of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such Schedule 13G is filed on behalf of each of them; and

(ii)each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other person making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same instrument.

Dated: December 5, 2023

V. PREM WATSA
/s/ V. Prem Watsa
THE SECOND 810 HOLDCO LTD.
By:	/s/ V. Prem Watsa
	Name:	V. Prem Watsa
	Title:	Director
THE SECOND 1109 HOLDCO LTD.
By:	/s/ V. Prem Watsa
	Name:	V. Prem Watsa
	Title:	President
THE SIXTY TWO INVESTMENT COMPANY LIMITED
By:	/s/ V. Prem Watsa
	Name:	V. Prem Watsa
	Title:	President
12002574 CANADA INC.
By:	/s/ V. Prem Watsa
	Name:	V. Prem Watsa
	Title:	President
FFHL GROUP LTD.
By:	/s/ V. Prem Watsa
	Name:	V. Prem Watsa
	Title:	President

FAIRFAX FINANCIAL HOLDINGS LIMITED
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	President and Chief Operating Officer
FAIRFAX (US) INC.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ODYSSEY US HOLDINGS INC.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ODYSSEY GROUP HOLDINGS, INC.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ODYSSEY REINSURANCE COMPANY
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
CRUM & FORSTER HOLDINGS CORP.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
UNITED STATES FIRE INSURANCE COMPANY
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
Zenith National Insurance Corp.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact

ZENITH INSURANCE COMPANY
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
NORTHBRIDGE FINANCIAL CORPORATION
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
FEDERATED INSURANCE COMPANY OF CANADA
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
NORTHBRIDGE GENERAL INSURANCE CORPORATION
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
CRC Reinsurance Limited
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
1102952 B.C. UNLIMITED LIABILITY COMPANY
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ALLIED WORLD ASSURANCE COMPANY HOLDINGS, LTD
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ALLIED WORLD ASSURANCE COMPANY HOLDINGS I, LTD
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact

ALLIED WORLD ASSURANCE COMPANY, LTD
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ALLIED WORLD ASSURANCE HOLDINGS (IRELAND) LTD
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ALLIED WORLD ASSURANCE HOLDINGS (U.S.) INC
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
ALLIED WORLD INSURANCE COMPANY
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
Allied World Assurance Company (U.S.) Inc.
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact
Allied World National Assurance Company
By:	/s/ Peter Clarke
	Name:	Peter Clarke
	Title:	Attorney-in-Fact