Keystone REIT Inc.

Q: Jun 30 2026

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration of Securities on Exchange

Notice of Effectiveness

Certification of approval for listing and registration on a national securities exchange

Registration of securities of certain real estate companies (amendment)

Registration of securities of certain real estate companies (amendment)

Registration of securities of certain real estate companies (amendment)

Registration of securities of certain real estate companies

Bartlett Thomas A

BAMCO INC /NY/

Morefield Diane M

Myers Mark Laurence

Capossela Christopher C

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

PRINCIPAL GLOBAL INVESTORS

BlackRock Portfolio Management LLC

COHEN & STEERS, INC.

Blackstone Holdings III L.P.

Myers Mark Laurence

Mouat Rory

Forman Michael John

Keenan Katharine A

Marone Anthony F. JR

Bartlett Thomas A

Morefield Diane M

SCHWARZMAN STEPHEN A; Blackstone Inc.; Blackstone Group Management L.L.C.; Blackstone Holdings III L.P.; Blackstone Holdings III GP L.P.; Blackstone Holdings III GP Management L.L.C.; Blackstone Treasury Holdings III L.L.C.

Pell Nicholas L.

Diverio Michael A.

Draft registration statement (confidential submission) (amendment)

Draft registration statement (confidential submission) (amendment)