Results of Operations and Financial Condition. ​ On July 28, 2026, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the second quarter ended June 30, 2026. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemental op…

Completion of Acquisition or Disposition of Assets. On July 8, 2026, FSP Greenwood Plaza Corp. (the “Seller”), a wholly-owned subsidiary of Franklin Street Properties Corp. (the “Registrant”), closed on the sale of the office buildings located at 6550 and 6560 Greenwood Plaza Boulevard, Englewood, Colorado containing approximately 196,236 square feet (the “Property”) to University of Colorado Health (the “Buyer”), pursuant to a Purchase and Sale Agreement dated May 26, 2026, as amended by a F…

Results of Operations and Financial Condition. ​ On April 28, 2026, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the first quarter ended March 31, 2026. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemental o…

Results of Operations and Financial Condition. ​ On March 9, 2026, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the fourth quarter and full year ended December 31, 2025. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of t…

Termination of a Material Definitive Agreement. On February 26, 2026, in connection with the entry into the New Credit Agreement described above, the Company terminated and prepaid all outstanding indebtedness under (i) the Second Amended and Restated Credit Agreement, dated as of September 27, 2018 (as amended by the First Amendment to Second Amended and Restated Credit Agreement, dated as of February 10, 2023 and by the Second Amendment to Second Amended and Restated Credit Agreement, dated…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information under

Entry into a Material Definitive Agreement. Credit Agreement On February 26, 2026 (the “Closing Date”), Franklin Street Properties Corp. (the “Company”) entered into a Credit Agreement (the “New Credit Agreement”) with Alter Domus (US) LLC, as administrative agent (the “Agent”), and Silver Oak Capital LLC, an affiliate of TPG Credit (collectively, the lenders from time to time party thereto, the “Lenders”). The New Credit Agreement provides for a secured credit facility (the “Credit Facility”…

Other Events. On February 27, 2026, the Company issued a press release announcing its entry into the Credit Agreement described in

Director — Mr. Milton P. Wilkins, Jr.: Mr. Wilkins decided not to stand for re-election at the upcoming annual meeting.

Results of Operations and Financial Condition. ​ On October 28, 2025, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and nine months ended September 30, 2025. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the…

Results of Operations and Financial Condition. ​ On July 29, 2025, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and six months ended June 30, 2025. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemen…

Results of Operations and Financial Condition. ​ On April 29, 2025, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three months ended March 31, 2025. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemental op…

Director — Mr. Brian N. Hansen: Mr. Brian N. Hansen decided not to stand for re-election at the upcoming annual meeting.

Director — Kenneth A. Hoxsie: Mr. Kenneth A. Hoxsie decided not to stand for re-election at the upcoming annual meeting.

Results of Operations and Financial Condition. ​ On February 11, 2025, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and twelve months ended December 31, 2024. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of th…

Director — Mr. Schanzer: Mr. Schanzer was appointed to the Board and Audit Committee.

Entry into a Material Definitive Agreement. On November 27, 2024, Franklin Street Properties Corp. (the “Company”) entered into a cooperation agreement (the “Cooperation Agreement”) with Converium Capital Inc., Converium Capital Master Fund LP and Converium PGEQ Multi-Strategy Fund L.P. (collectively, “Converium”), and Erez REIT Opportunities LP and Erez Asset Management LLC (collectively, “Erez” and together with Converium, the “Stockholder Parties”). Pursuant to the Cooperation Agreement, t…

Results of Operations and Financial Condition. ​ On October 29, 2024, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and nine months ended September 30, 2024. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the…

Results of Operations and Financial Condition. ​ On July 30, 2024, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and six months ended June 30, 2024. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemen…

Results of Operations and Financial Condition. ​ On April 30, 2024, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three months ended March 31, 2024. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the supplemental op…

Director — Ms. Kathryn P. O’Neil: Ms. O'Neil decided not to stand for re-election at the upcoming annual meeting.

Results of Operations and Financial Condition. ​ On February 26, 2024, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and twelve months ended December 31, 2023. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of th…

Completion of Acquisition or Disposition of Assets. On December 6, 2023, FSP Blue Lagoon Drive LLC (the “Seller”), a wholly-owned subsidiary of Franklin Street Properties Corp. (the “Registrant”), closed on the sale of the office building located at 5505 Blue Lagoon Drive, Miami, Florida containing approximately 213,182 square feet (the “Property”) to LEN Blue Lagoon, LLC (as successor-in-interest to Lennar Homes, LLC, the “Buyer”), pursuant to a Purchase and Sale Agreement dated July 26, 202…

Results of Operations and Financial Condition. ​ On November 7, 2023, Franklin Street Properties Corp. (the “Registrant”) announced its financial results for the three and nine months ended September 30, 2023. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The press release references certain supplemental operating and financial data that is now available on the Registrant’s website. A copy of the…

Completion of Acquisition or Disposition of Assets. On October 26, 2023, FSP One Legacy Circle LLC (the “Seller”), a wholly-owned subsidiary of Franklin Street Properties Corp. (the “Registrant”), closed on the sale of the office building located at 7500 Dallas Parkway, Plano, Texas (the “Property”) to Land Legacy LP and Manas Legacy LP (as successors-in-interest to LLL Four Forest, LLC, and together the “Buyer”), pursuant to a Purchase and Sale Agreement dated July 26, 2023, as amended pursu…