Bob Brennan, 47, Promoted CEO of Iron Mountain

Iron Mountain
Incorporated announced that Bob Brennan, the Company’s
President and Chief Operating Officer, will succeed Richard Reese as
Iron Mountain’s Chief Executive Officer. Reese notified the Company’s
Board of Directors of his intention to step down as CEO, a
position he has held since December 1981, at Iron Mountain’s Annual
Meeting of Stockholders on June 5, 2008 to become the Company’s first
Executive Chairman of the Board. Brennan will continue in his role as
President, and will report directly to the Board. The Board also
announced its intention to nominate Brennan to stand for election to
the Board at the Annual Meeting in June.

"This transition represents a natural evolution of the senior
leadership at Iron Mountain. I have been discussing a succession plan
with the Board and I feel that now is the appropriate time to implement
it. Bob has been a leading candidate for the CEO position since he
joined the Company in 2004," Reese said. "He has a strong background in
technology and logistics and an excellent track record of building
successful senior executive teams. Bob has proven himself as a strong
leader within our Company and is committed to enhancing our culture and
driving long-term success at Iron Mountain. I am confident that Bob’s
appointment as CEO will enhance our ability to pursue our strategic
agenda."

Brennan, 47, joined Iron Mountain as President of North America in
November 2004 in connection with the Company’s acquisition of Connected
Corporation, where he served as Chairman and CEO. He was named
President and Chief Operating Officer in December 2005. "Bob emerged as
the leading candidate to fill this position shortly after joining the
Company and has effectively been transitioning into this role for the
past two years," continued Reese. "He has all the characteristics the
Board and I were looking for in Iron Mountain’s next CEO. He has
learned the business very quickly from the inside, he’s a great leader
who cares deeply about the employees and customers and he always ‘flies
the mission’."

As Executive Chairman, a full time position reporting to the
Board, Reese, 61, will focus on driving the Company’s new services
agenda and advising the CEO on strategy and other matters of the
business while continuing to perform his duties as Chairman of the
Company’s Board of Directors.

Iron Mountain Incorporated