OMAM Announces Closing of Secondary Offering

LONDON–(BUSINESS WIRE)–OM Asset Management plc (NYSE: OMAM) announced today the closing of an
underwritten public offering of 17.3 million of its ordinary shares. The
shares were sold at a public offering price of $14.55 per share.

The shares were sold by Old Mutual plc, through its wholly owned
subsidiary, OM Group (UK) Limited. OMAM did not sell any shares in the
offering and did not receive any proceeds from the sale of the shares.

The underwriter has an option, exercisable through June 14, 2017, to
purchase up to an additional 2.595 million shares from OM Group (UK)
Limited at the public offering price, less the underwriting discount.

In addition, the previously announced private repurchase transaction, in
which OMAM repurchased 5 million ordinary shares directly from OM Group
(UK) Limited, at a price of $14.55 per share, also closed on May 19,
2017.

Morgan Stanley & Co. LLC acted as sole bookrunning manager for the
public offering.

Copies of the prospectus supplement relating to the public offering may
be obtained from: Morgan Stanley & Co. LLC, Attention: Prospectus
Department, 180 Varick Street, Second Floor, New York, NY 10014. The
prospectus may also be obtained, for free, by visiting the SEC’s website
at www.sec.gov.

This press release shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these
securities in any state or jurisdiction in which such offer,
solicitation or sale would be unlawful prior to registration or
qualification under the securities laws of any such state or
jurisdiction.

About OMAM

OMAM is a global, multi-boutique asset management company with
approximately $249.7 billion of assets under management as of March 31,
2017. Its diverse Affiliates offer leading, alpha generating investment
products to investors around the world. OMAM’s partnership approach,
which includes equity ownership at the Affiliate level and a profit
sharing relationship between OMAM and its Affiliates, aligns the
interests of the Company and its Affiliates to work collaboratively in
accelerating their growth. OMAM’s business model combines the investment
talent, entrepreneurialism, focus and creativity of leading asset
management boutiques with the resources and capabilities of a larger
firm.

This press release includes forward-looking statements, as that term is
used in the Private Securities Litigation Reform Act of 1995, including
information relating to the proposed public offering and the proposed
Repurchase Transaction. The words or phrases ‘‘will likely result,’’
‘‘are expected to,’’ ‘‘will continue,’’ ‘‘is anticipated,’’ ‘‘can be,’’
‘‘may be,’’ ‘‘aim to,’’ ‘‘may affect,’’ ‘‘may depend,’’ ‘‘intends,’’
‘‘expects,’’ ‘‘believes,’’ ‘‘estimate,’’ ‘‘project,’’ and other similar
expressions are intended to identify such forward-looking statements.
Such statements are subject to various known and unknown risks and
uncertainties and readers should be cautioned that any forward-looking
information provided by or on behalf of the Company is not a guarantee
of future performance.

Actual results may differ materially from those in forward-looking
information as a result of various factors, some of which are beyond the
Company’s control, including but not limited to those discussed above
and elsewhere in this press release, in the Company’s most recent Annual
Report on Form 10-K, filed with the Securities and Exchange Commission
on February 22, 2017, the Company’s Current Report on Form 8-K filed
with the Securities and Exchange Commission on May 15, 2017 and the
Company’s prospectus supplement filed with the Securities and Exchange
Commission on May 17, 2016. Due to such risks and uncertainties and
other factors, the Company cautions each person receiving such
forward-looking information not to place undue reliance on such
statements. Further, such forward-looking statements speak only as of
the date of this press release and the Company undertakes no obligations
to update any forward looking statement to reflect events or
circumstances after the date of this press release or to reflect the
occurrence of unanticipated events.

OMAM-201749.2

Contacts

OMAM
Brett Perryman, 617-369-7300
[email protected]