Subsequent events

Ariad Pharmaceuticals, Inc. Expansion

On July 3, 2013, Ariad Pharmaceuticals, Inc. executed a letter of intent (“LOI”) to lease an additional 139,374 RSF for a 15 year term at our 75/125 Binney Street development in the Cambridge submarket of Greater Boston. An amendment to their lease is under negotiation to increase their lease to 383,497 RSF, or 99% of the total RSF of the project.

Sale of land parcel at 1600 Owens Street

On July 8, 2013, we executed a purchase and sale agreement to dispose of our land parcel at 1600 Owens Street in the Mission Bay submarket of the San Francisco Bay Area for an aggregate sales price of $55.2 million, inclusive of certain parking spaces. This sale is expected to close in December 2013.

Acquisition of 10121/10151 Barnes Canyon Road

On July 5, 2013, we agreed to make a $13.1 million investment in 10121/10151 Barnes Canyon Road, an approximate 116,000 RSF office property located in the Sorrento Mesa submarket of San Diego. Our investment will be funded in two installments: i) $5.4 million to be funded in August 2013 (which will earn a 7% return until the next payment is made), and ii) $7.7 million to be funded no later than October 2014. The property is currently 100% occupied with leases that expire in 2014 and 2015. We intend to convert the existing office space into laboratory space through redevelopment when the space becomes available. Initial stabilized yields will be provided in the future upon commencement of the redevelopment.

Unsecured senior bank loan financings

On July 26, 2013, we amended our $600 million 2016 Unsecured Senior Bank Term Loan to reduce our interest rate on outstanding borrowings. We did not extend the maturity of this loan as we expect to repay the loan over the next one to three years. In addition, we expect to complete amendments to our $1.5 billion unsecured senior line of credit and our $600 million 2017 Unsecured Senior Bank Term Loan in the third quarter of 2013 to reduce our interest rate on outstanding borrowings, extend the maturity dates and amend certain financial covenants. The commitments available for each facility will not change.

Maturity Date (including extensions)

Applicable Rate

Facility Fee

Facility

Status

Prior/

Current

Extended/

Proposed

Prior/

Current

Extended/

Proposed

Prior/

Current

Extended/

Proposed

$600 million 2016 Unsecured Senior Bank Term Loan

Complete

June 2016

July 2016

L +1.75%

L +1.20%

N/A

$600 million 2017 Unsecured Senior Bank Term Loan

In Progress

January 2017

January 2019

L +1.50%

L +1.20%

N/A

$1.5 billion unsecured senior line of credit

In Progress

April 2017

January 2019

L +1.20%

L +1.10%

0.25%

0.20%