Investment Funds Managed by Golden Gate Capital Complete Acquisition of ANGUS Chemical Company

SAN FRANCISCO, CA and BUFFALO GROVE, IL – Golden Gate Capital, a private equity
investment firm with more than $12 billion of committed capital under management, today
announced that investment funds managed by Golden Gate Capital have successfully
completed the acquisition of ANGUS Chemical Company (ANGUS), the world’s only chemical
company dedicated to the manufacture and distribution of nitroalkanes and their derivatives,
from The Dow Chemical Company (NYSE: DOW).

ANGUS will continue to be led by its current senior management team, including President and
CEO Mark A. Henning. Additionally, ANGUS will continue to honor all customer, licensing and
supplier contracts and related agreements.

“We strongly support ANGUS management and believe their strategic vision for the Company
will drive long-term success,” said Rajeev Amara, Managing Director at Golden Gate Capital.
“Looking ahead, we are focused on working with the ANGUS team to invest in targeted growth
areas through their Customer Application Centers as well as in their people, capacity, next
generation R&D and pipeline.”

“While our ownership has changed, our commitment to our customers remains stronger than
ever,” said Mark A. Henning, ANGUS President and CEO. “We look forward to working with our
new partners to continue our positive momentum in the marketplace – driving growth at the local
level by constantly proving how ANGUS chemistry helps our customers’ products and
processes perform better.”

As previously announced, the $1.215 billion transaction includes the ANGUS business
headquarters and R&D facility in Buffalo Grove, IL; manufacturing facilities located in
Sterlington, LA, and Ibbenbueren, Germany; a life-science additive facility in Niagara Falls, NY;
as well as the associated business, inventory, customer contracts, process technology,
business know-how and certain intellectual property.

About ANGUS Chemical Company
ANGUS Chemical Company (“ANGUS”) is a specialty amine company dedicated to the development of novel
chemistry that helps customers deliver enhanced product and process performance. ANGUS is committed to
constantly improving products and services by mastering science and technology. The company innovates through
its unique nitroalkane chemistry, which harbors the reactivity to create complex molecules for use in a wide variety
of applications. The innate characteristics of this chemistry enable multifunctional additives which improve
performance, reduce reaction steps and cut synthesis costs.

About Golden Gate Capital
Golden Gate Capital is a San Francisco-based private equity investment firm with approximately $12 billion of
capital under management. Golden Gate Capital is dedicated to partnering with world-class management teams to
invest in change-intensive, growth businesses. The firm targets investments where there is a demonstrable
opportunity to significantly enhance a company’s value. The principals of Golden Gate Capital have a long and
successful history of investing with management partners across a wide range of industries and transaction types.
Other notable mining and industrials investments sponsored by Golden Gate Capital include US Silica, EP
Minerals, ArrMaz, Humanetics Innovative Solutions, Springs Window Fashions, Canada Fluorspar Inc. and Atrium
Windows. For more information, visit

Media Contacts
For Golden Gate Capital:
Nathaniel Garnick / Jenny Gore
Sard Verbinnen & Co
(212) 687-8080 / (312) 895-4700

J. Bryan Kitchen
ANGUS Chemical Company