Illustrative Term Sheet for

$455.0 million Senior Secured Notes¹

An ad hoc group of institutional investors holding a majority of OPI’s 2025 Notes (the “AHG”) are willing to work supportively with the Issuer and its advisors to structure and commit to participate in an exchange offer of approximately $460 million of 2025 Notes for:

(i) common stock representing 19.9% of the fully diluted common equity of the Issuer,

(ii) $75 million of cash,

(iii) $455.0 million of Senior Secured Notes due 2027 (the “Secured Notes” and with clauses (i) and (ii), collectively, the “Exchange Consideration”) subject to the terms and conditions herein and assuming a November 15, 2024 closing.

The AHG will receive a $10 million cash fee for committing to support the transaction on a pro rata basis based on their Secured Notes.

All holders of OPI’s 2025 Notes that tender by the early tender deadline, including members of the AHG, will receive their pro rata share of the Exchange Consideration in exchange for 2025 Notes, together with accrued interest through (but not including) the date of the exchange.

This exchange transaction will be subject to a minimum participation threshold of not less than 90%.

Interest: [3.25]% per annum

Issue Price: 84.615%

Combination of coupon and OID such that Issuer remains in compliance with its financial covenants pro forma for the transaction.

On the issue date, the Secured Notes will be fully and unconditionally guaranteed on a joint, several and senior basis by:

(i) subsidiaries that own the Collateral Properties (the “Collateral Guarantors”);

(ii) subsidiaries that own the Second Lien Collateral (the “Second Lien Guarantors”); and

(iii) each of the Issuer’s other subsidiaries (the “Other Subsidiaries”) and, together with the Collateral Guarantors and the Second Lien Guarantors, the “Guarantors”)².

Pursuant to such guarantee, the Guarantors will guarantee the principal, premium, if any, and accrued and unpaid interest on the Secured Notes.

The Secured Notes and related guarantees will be secured by:

(i) a first priority lien and security interest on the Collateral Properties; and

(ii) a first priority lien and security interest on an assignment of rents relating to the Collateral Properties; and

(iii) a first priority lien and security interest on the 100% of the equity interests in each of the Collateral Guarantors; and

(iv) a junior lien on the Second Lien Properties as a “permitted junior lien” as provided therein (subject to confirmatory due diligence), or the equity interests of the subsidiary obligors pledged in connection therewith (the “Second Lien Collateral”);

(in each case, subject to customary exceptions and permitted liens) (clauses (i)-(iii), the “First Lien Collateral”, and together with the Second Lien Collateral, the “Collateral”).

Each Collateral Guarantor will be subject to restrictions on transfer of assets, investments and similar restrictions applicable to holding companies of this type on terms substantially consistent with those set forth in the OPI Credit Agreement.

“Second Lien Properties” means the 19 fee-owned real properties that secure, on a first lien basis, the Issuer’s Senior Secured Notes issued on June 20, 2024 and October 8, 2024 (the “[Exchange Notes]”³).

Stock Certificates and Powers: All equity to be pledged that is First Lien Collateral shall be certificated, with the original share or membership certificates, as applicable, delivered to the Collateral Agent, along with share or membership powers executed in blank.

Termination of Property Management Agreements:  All property management agreements with respect to the First Lien Collateral will be subject to termination rights in connection with a foreclosure acceptable to the AHG.

Collateral Reporting to Indenture Trustee:  Solely following the occurrence and during the continuation of an Event of Default, property-level reporting on a quarterly basis, which will include rent rolls, capital commitments, operating statements, cash flow statements and KPIs.

Public Collateral Reporting to Secured Noteholders: On a quarterly basis, Issuer will publicly report portfolio-level operating financial metrics and KPIs on the First Lien Collateral properties substantially consistent with current practice on its existing debt collateral pools in its financial statements, its investor presentation, its financial supplement and as fully defined in the definitive documentation.

Major Leases: Following a breach of an agreed upon NOI yield, with respect to the First Lien Collateral, execution of major leases and associated capital commitments subject to approval of Collateral Agent. Definition of major lease to be mutually agreed between AHG and Issuer.

Major Lease Reserves:  Following a breach of an agreed upon NOI yield, with respect to the First Lien Collateral, the Issuer shall establish customary reserves to be held by the Collateral Agent from First Lien Collateral cash flow to cover tenant improvements and leasing commissions associated with approved Major Leases and expiring Major Lease spaces in advance of expiration. Detailed terms to be mutually agreed between the AHG and the Issuer.

Collateral Cash Flow Sweep: Following the occurrence of an Event of Default, with respect to the First Lien Collateral, all excess First Lien Collateral cash flow (to be defined in a manner to be agreed) after debt service will be held by the Collateral Agent (it being understood that the Issuer may freely utilize such cash to pay for First Lien Collateral operating expenses).

The Issuer will submit all mortgages for the Collateral Properties for recording and obtain lender’s title insurance for all such mortgages at closing.

Collateral will be released from the liens and security interests created by the applicable security documents at any time and from time to time in accordance with the provisions of the security documents and the indenture. The Collateral will release under any one or more of the following circumstances:

·      as to all Collateral, upon payment in full of the principal plus accrued and unpaid interest, if any, on, the Secured Notes and all other non-contingent obligations in respect of the Secured Notes under the indenture, the guarantees and the security documents that are due and payable at or prior to the time such principal, plus, accrued and unpaid interest, if any, is paid;

·      as to all Collateral, upon a legal defeasance or covenant defeasance with respect to the Secured Notes or the satisfaction and discharge of the indenture;

·      as to any Collateral, upon consummation of the sale, transfer or other disposition of such Collateral by the Issuer or a Guarantor to any Person other than the Issuer or any affiliate of the Issuer to the extent such sale, transfer or other disposition is not prohibited under the indenture;

·      as to any Collateral in the form of equity interests, in the event of a sale, transfer or other disposition of all or substantially all of the properties or assets of the entity represented by such equity interests (including by way of merger or consolidation) to a Person that is not the Issuer or a subsidiary of the Issuer to the extent such sale, transfer or other disposition is not prohibited under the indenture;

·      as to any Collateral Property, upon the redemption of an aggregate principal amount of the Secured Notes equal to the amount required by “Limitation on Collateral Asset Sales”

·      with respect to any Collateral that is capital stock, upon the dissolution or liquidation of the issuer of that capital stock that is not prohibited by the indenture;

·       as to any Second Lien Collateral, at such time any such Second Lien Collateral is no longer subject to a Lien securing the Exchange Notes, other than any Second Lien Collateral that ceases to be subject to a Lien securing the Exchange Notes in connection with a satisfaction and discharge or as a result of payment in full and termination of the Exchange Notes;

·       as to any Collateral, as ordered pursuant to applicable law under a final and nonappealable order or judgment of a court of competent jurisdiction; or

·      as to all or substantially all Collateral, with the consent of 100% of holders of the aggregate principal amount of the Secured Notes then outstanding; excluding any Secured Notes held by OPI or any affiliates of OPI.

In addition, notwithstanding anything to the contrary, the security interests in all Collateral securing the Secured Notes and related guarantees shall automatically and unconditionally be released pursuant to the terms of any applicable intercreditor agreement.

On March 1, 2026, the Issuer will redeem $175.0 million in principal amount of the Secured Notes (less the principal amount of Secured Notes the Issuer has otherwise redeemed on or prior to such date, excluding the Quarterly Redemption) at a price equal to the principal amount thereof plus accrued and unpaid interest to, but not including, the redemption date.

In addition, the Issuer will redeem $6.5 million in principal amount of the Secured Notes by the last business day of each quarter, commencing with the quarter ended March 31, 2025 (the “Quarterly Redemption”).

If the Issuer or the Guarantors consummate a Collateral Asset Sale with respect to any First Lien Collateral, the Issuer or the Guarantors, as applicable, must receive consideration for such asset sale at least equal to the fair market value to non-affiliates (as determined on the date on which such First Lien Collateral is contractually agreed to be sold in good faith by OPI) of the applicable First Lien Collateral that is sold and 100% of the consideration from such sale must be in the form of cash and cash equivalents. First Lien Collateral proceeds may not be reinvested.

Promptly following the sale of any such First Lien Collateral, the Issuer must issue notice to redeem a portion of the Secured Notes (on a pro rata basis with any Debt secured by Additional Secured Notes Liens) in a principal amount equal to the greater of: (x) 100% of the net proceeds from the asset sale; and (y) 100% of an amount based on procedures to be agreed in the definitive documentation;⁴ provided that the net proceeds to be received in connection with the disposition of the Collateral Property located at 20 Massachusetts Ave NW, Washington, DC 20529 (as more fully described in the definitive documentation) shall not be less than a release price set forth in the definitive documentation.

If the Issuer or the Guarantors consummate a Non-Collateral Asset Sale with respect to any non-Collateral, the Issuer or the Guarantors, as applicable, must receive consideration for such asset sale at least equal to the fair market value to non-affiliates (as determined on the date on which such Collateral is contractually agreed to be sold in good faith by OPI) of such assets and 100% of the consideration from such sale must be in the form of cash and cash equivalents. Non-Collateral proceeds may not be reinvested.

Promptly following the sale of any such Non-Collateral Asset Sale, the Issuer must issue: (i) a notice to redeem a portion of the Secured Notes equal to at least 50.0% of the net proceeds from such Non-Collateral Asset Sale; and (ii) may at is option use up to 50.0% of the net proceeds from such Non-Collateral Asset Sale to retire its notes due 2026 and then its notes due 2027 (until such time as the notes due 2026 and 2027 are retired).

If any casualty, loss, damage, destruction, condemnation, government seizure or other similar loss occurs with respect to the First Lien Collateral which results in net proceeds and the Issuer (or the Guarantors as the case may be) does not intend to make a Reinvestment Election (as defined below), the Issuer will apply the net proceeds within 20 business days following receipt of the net proceeds to redeem the Secured Notes at a price equal to 100% of the principal amount plus accrued and unpaid interest, if any, to, but not including, the redemption date;

provided, however, that the Issuer (or the Guarantors, as the case may be), may, within 120 days following receipt of the net proceeds, elect to

(i) reinvest any portion of the net proceeds to replace or repair the First Lien Collateral or acquire replacement property that shall become Collateral,

(ii) use any portion of the net proceeds to satisfy any obligations of the Issuer or the Guarantors to tenants, operators or managers of the Collateral Properties, or

(iii) any combination of the foregoing (in each case, a “Reinvestment Election”).

“Permitted Refinancing Indebtedness” will mean Debt of OPI or any of its Subsidiaries issued in exchange for, or the net proceeds of which are used to, or which serves to, extend, refinance, modify, renew, replace, defease, discharge or refund other Debt of OPI or any of its Subsidiaries (other than intercompany Debt); provided that:

(i) the principal amount (or accreted value, if applicable) of such Permitted Refinancing Indebtedness does not exceed the principal amount (or accreted value, if applicable) of the Debt so extended, refinanced, modified, renewed, replaced, discharged or refunded except by an amount equal to accrued and unpaid interest and premium (including tender premiums) thereon plus other amounts paid, and fees and expenses incurred, in connection with such modification, refinancing, refunding, replacement, substitution, renewal or extension and by an amount equal to any existing revolving commitments unutilized thereunder to the extent that the portion of any existing and unutilized revolving commitment being refinanced was permitted to be drawn immediately prior to such refinancing and such drawing shall be deemed to have been made;

(ii) such Permitted Refinancing Indebtedness has a weighted average life to maturity at the time such Permitted Refinancing Indebtedness is incurred which is not less than the remaining weighted average life to maturity of the Debt being refunded or refinanced; and

(iii) to the extent such Refinancing Indebtedness refinances subordinated Debt, such Permitted Refinancing Indebtedness is subordinated Debt.

For the avoidance of doubt, Permitted Refinancing Indebtedness includes successive incurrences of Permitted Refinancing Indebtedness of the same Debt.

The Issuer and the Guarantors will not incur liens in respect of Debt on any of the Collateral except for Permitted Liens.

“Permitted Liens” will mean:

(i) liens securing taxes, assessments and other charges or levies imposed by a governmental authority or the claims of materialmen, mechanics, carriers, warehousemen or landlords for labor, materials, supplies or rentals;

(ii) liens consisting of encumbrances in the nature of zoning restrictions, easements, and rights or restrictions of record on the use of real property, which do not materially impair the existing use thereof,

(iii) liens granted by any tenant on its leasehold estate in a property;

(iv) the interests of tenants, operators or managers of properties;

(v) judgment liens (other than for the payment of taxes, assessments or other governmental charges) securing judgments and other proceedings not constituting an Event of Default hereunder;

(vi) non-exclusive licenses of intellectual property rights in the ordinary course of business;

(vii) matters disclosed in any title report, commitment or policy provided to or obtained by the collateral agent for the Secured Notes on or before the issue date of the Secured Notes;

(viii) liens securing (A) the initial Secured Notes and (B) additional Secured Notes up to an aggregate principal amount at any time outstanding that does not exceed $[to be determined]⁵ (“Additional Secured Notes Liens”); and

(ix) with respect to the Second Lien Collateral, Permitted Senior Liens securing Debt in an aggregate principal amount at any time outstanding not to exceed $610.0 million plus certain refinancing expenses, fees and costs to be agreed.

“Permitted Senior Liens” means any Lien on all or a portion of any Second Lien Collateral that ranks senior to the Liens on such assets securing the Secured Notes and the related guarantees in accordance with the terms of any acceptable intercreditor agreement.

The Issuer will not be required to, and does not intend to, register the Secured Notes under the Securities Act. The Secured Notes will be DTC eligible securities with CUSIP numbers.

The definitive documentation will include customary registration rights for the equity providing the Issuer to use commercially reasonable efforts to prepare and file, as soon as reasonably practicable (and no more than 10 business days from the closing date) to file with the U.S. Securities and Exchange Commission a prospectus supplement to the Issuer’s automatic shelf registration statement on Form S-3 (File No. 333-265997) for the offer and resale (by any legally permissible means) of the equity by the AHG as selling shareholders thereunder.

Customary sacred rights. All other modifications and waivers, require the consent of a majority of the applicable series of Secured Notes.

Holders of a majority of the Secured Notes may replace the Indenture Trustee and the Collateral Agent, with only notice to the Issuer.