SCHEDULE 13G/A

(Rule 13d-102)

Under the Securities Exchange Act of 1934
(Amendment No. 3)*

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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Item 1(a).                                         Name of Issuer:

Item 1(b).                                         Address of Issuer’s Principal Executive Offices:

Two Newton Place

255 Washington Street, Suite 300

Item 2(a).                                         Name of Person Filing:

This Statement is filed on behalf of each of the following persons (collectively, the “Reporting Persons”):

(1)                                  CommonWealth REIT (“CWH”, and formerly known as HRPT Properties Trust)

(2)                                  Reit Management & Research LLC (“RMR”) (the manager of CWH)

(3)                                  Reit Management & Research Trust (“RMR Trust”) (the sole member of RMR)

(4)                                  Barry M. Portnoy (a managing trustee of the Issuer, a managing trustee of CWH, the Chairman and a director of RMR, and the Chairman, majority beneficial owner and a trustee of RMR Trust)

Item 2(b).                                         Address of Principal Offices or, if none, Residence:

The address of each Reporting Person is:

Two Newton Place

255 Washington Street, Suite 300

Item 2(c).                                         Citizenship:

CWH is a Maryland real estate investment trust.

RMR is a Delaware limited liability company.

RMR Trust is a Massachusetts business trust.

Barry M. Portnoy is a United States citizen.

Item 2(d).                                         Title of Class of Securities:

Item 2(e).                                         CUSIP Number:

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Item 3.                                                       If the statement is being filed pursuant to Rule 13d-1(b) or 13d-2(b) or (c), check whether the filing person is a:

Not applicable.

(a)          o            Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)         o            Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)          o            Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)         o            Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)          o            An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)            o            An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)         o            A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)         o            A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)             o            A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act (15 U.S.C. 80a-3);

(j)             o            A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J);

(k)          o            Group, in accordance with § 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:____________________________

Item 4.                                                       Ownership.

(a)          Amount beneficially owned:

CWH beneficially owns 9,950,000 Common Shares of Beneficial Interest of the Issuer, which it acquired in connection with an investment when the Issuer was formed.

Neither RMR nor RMR Trust holds any Common Shares of Beneficial Interest of the Issuer.  RMR, as manager of CWH, and RMR Trust, as the sole member of RMR, may, under applicable regulatory definitions, be deemed to beneficially own (and have shared voting and dispositive power over) the 9,950,000 Common Shares of Beneficial Interest beneficially owned by CWH, but each disclaims such beneficial ownership.

Mr. Barry Portnoy beneficially owns 5,032.107 Common Shares of Beneficial Interest of the Issuer.  Mr. Adam Portnoy beneficially owns 13,750 Common Shares of Beneficial Interest of the Issuer (of which 4,600 are subject to vesting requirements and will become fully vested, subject to the lapse of certain contingencies, annually through 2014).  In their respective positions with RMR and RMR Trust, described in Item 2(a) above, Mr. Barry Portnoy and Mr. Adam Portnoy may also be deemed to beneficially own (and have shared voting and dispositive

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(b)         Percent of class:

CWH beneficially owns approximately 21.1% of the Issuer’s Common Shares of Beneficial Interest.

(c)          Number of shares as to which such person has:

(i)             Sole power to vote or direct the vote:

(ii)          Shared power to vote or direct the vote:

(iii)       Sole power to dispose or to direct the disposition of:

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(iv)      Shared power to dispose or to direct the disposition of:

Reference is made to Item 4(a) above as to the Issuer’s Common Shares of Beneficial Interest beneficially owned by CWH which may, under applicable regulatory definitions, be deemed to be beneficially owned by RMR, RMR Trust, Mr. Barry Portnoy and Mr. Adam Portnoy.

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SIGNATURES

After reasonable inquiry and to the best of the knowledge and belief of the undersigned, the undersigned certifies that the information set forth in this statement is true, complete and correct.

Attention. Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).

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EXHIBIT INDEX

*Included as an exhibit to the Schedule 13G filed January 26, 2010.

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