Amy E. Hood Elected to 3M Board of Directors

ST. PAUL, Minn.–(BUSINESS WIRE)–3M (NYSE: MMM) announced today that Amy E. Hood, executive vice
president and chief financial officer, Microsoft Corp. (Nasdaq: MSFT),
has been elected to 3M’s Board of Directors, effective Aug. 13, 2017.

At Microsoft, Hood is responsible for leading the worldwide finance
organization, including acquisitions, treasury activities, tax planning,
accounting and reporting, and internal audit and investor relations, in
a position she has held since July 2013. Prior to this role, she was
chief financial officer of the Microsoft division responsible for the
company’s productivity applications and services, including Microsoft
Office 365 and Dynamics 365. Hood also helped lead the transition to
Microsoft’s Commercial Cloud services and is deeply involved in pursuing
new addressable market opportunities with strategic investments such as
the acquisition of Mojang AB (maker of Minecraft) and LinkedIn.

“We are extremely pleased to welcome Ms. Hood to our board,” said Inge
G. Thulin, 3M chairman, president and chief executive officer. “She
brings her tremendous skill and immense experience to our board,
especially in strategic business development, finance, and digitization.”

Hood will serve on the 3M Board’s finance committee.

Prior to joining Microsoft in 2002, Hood worked at Goldman Sachs & Co.
in various investment banking and capital markets group roles. She holds
a bachelor’s degree in economics from Duke University and a master’s
degree in business administration from Harvard University. In 2016, Hood
was named for the first time to Fortune’s Most Powerful Women list.

About 3M
At 3M, we apply science in collaborative ways to
improve lives daily. With $30 billion in sales, our 90,000 employees
connect with customers all around the world. Learn more about 3M’s
creative solutions to the world’s problems at www.3M.com
or on Twitter @3M or @3Mnews.

Contacts

3M Investor Contact:
Bruce Jermeland, 651-733-1807
or
3M
Media Contact:

Lori Anderson, 651-733-0831