William Ullmer

William Ullmer has over 15 years of investment banking experience having worked in Melbourne, Sydney, New York
and London.

Prior to joining Flagstaff Partners in 2021, William was a Managing Director at Perella Weinberg in New York, where he focused on S&P 500 and FTSE 100 clients primarily in the general industrials sector, and managed Perella Weinberg’s Japanese cross-border activities with alliance partner Mizuho. Before joining Perella Weinberg in 2013, William worked at Gresham Partners in Australia, having started his career as a graduate analyst at UBS Investment Bank in 2006.

William earned a Bachelor of Science (Advanced Maths) and Bachelor of Commerce (Double Finance and Accounting) from the University of Sydney.


Adviser to Transcontinental Inc. on the sale of its kraft paper and woven polypropylene sacks business to Hood Packaging Corporation for US$180m

Adviser to the senior secured lender in funding the acquisition of Fairstone Financial Inc. by J.C. Flowers & Co. and Värde Partners

Adviser to Northrop Grumman Corporation on its US$9.2bn acquisition of Orbital ATK Inc.

Adviser to Qatar Investment Authority on its US$1.19bn investment in HK Electric Investments Ltd

Adviser to Phibro Animal Health Corporation on its Initial Public Offering on NASDAQ

Adviser to Gresham Private Equity on the sale of Witchery Group to Country Road Group Ltd for A$172m

Adviser to Warrnambool Cheese and Butter Factory Company Holdings Ltd on its proposed joint venture with National Foods Ltd to acquire Dairy Farmers Milk Co-operative’s cheese business for A$210m (withdrawn)

Adviser to Redflex Holdings on its defence to various takeover approaches

Adviser to Housewares International Ltd (Breville Group) on its defence to various takeover approaches

Adviser to Pacifica Group Ltd on the sale of 75% to Robert Bosch GmbH at an implied enterprise value of A$575m

Adviser to the Australian Government on the A$15.4bn Telstra Corporation Limited Share Offer
(Telstra 3)

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