X0202 SCHEDULE 13G 0001257391 XXXXXXXX LIVE Common Shares of Beneficial Interest, $0.01 par value per share 06/17/2026 0001456772 OFFICE PROPERTIES INCOME TRUST 67623C307 Two Newton Place 255 Washington Street, Suite 300 NEWTON MA 02458 Rule 13d-1(c) WHITEBOX ADVISORS LLC b DE 0 1797150 0 1797150 1797150 N 8.2 IA WHITEBOX GENERAL PARTNER LLC b DE 0 1797150 0 1797150 1797150 N 8.2 OO OFFICE PROPERTIES INCOME TRUST Two Newton Place, 255 Washington Street, Suite 300, NEWTON, MASSACHUSETTS, 02458 This statement is filed by: (i) Whitebox Advisors LLC, a Delaware limited liability company ("WA"); and (ii) Whitebox General Partner LLC, a Delaware limited liability company ("WGP" and, together with WA, the "Reporting Persons"). The address of the business office of WA and WGP is: 3033 Excelsior Boulevard Suite 500 Minneapolis, MN 55416 WA and WGP are organized under the laws of the State of Delaware. Y As of June 17, 2026, each of WA and WGP was deemed to be the beneficial owner of 1,797,503 common shares of beneficial interest, $0.01 par value per share ("Common Shares"), as a result of WA's clients' ownership of: (i) 1,748,958 Common Shares and (ii) warrants to purchase 48,545 Common Shares, which warrants are currently exercisable ("Warrants"). As of the date hereof, each of WA and WGP is deemed to be the beneficial owner of 1,797,150 Common Shares, as a result of WA's clients' ownership of (i) 1,748,605 Common Shares and (ii) Warrants to purchase 48,545 Common Shares. As of June 17, 2026, each of WA and WGP was deemed to beneficially own approximately 8.2% of the Common Shares outstanding. As of the date hereof, each of WA and WGP is deemed to beneficially own approximately 8.2% of the Common Shares outstanding. Percents of class were calculated based on the sum of (i) 21,953,577 Common Shares outstanding as of June 17, 2026, as reported in the Issuer's current report on Form 8-K filed with the Securities and Exchange Commission on June 23, 2026, and (ii) 48,545 Common Shares that WA and WGP have the right to acquire upon exercise of Warrants, which amount has been added to the Common Shares outstanding in accordance with Rule 13d-3(d)(1)(i) under the Securities Exchange Act of 1934, as amended. WA and WGP: 0 WA and WGP: 1,797,150 WA and WGP: 0 WA and WGP: 1,797,150 Y N WA's clients are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Shares covered by this Statement that may be deemed to be beneficially owned by the Reporting Persons. Y Y Y N 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. Exhibit A - Joint Filing Agreement, dated July 6, 2026, by and among the Reporting Persons WHITEBOX ADVISORS LLC /s/ Lisa Conrad 07/06/2026 WHITEBOX GENERAL PARTNER LLC /s/ Lisa Conrad 07/06/2026