Avantor (AVTR) investor relations material

Voting matters and shareholder proposals

• Shareholders will vote on the election of nine director nominees at the annual meeting scheduled for May 7, 2026.

• Advisory approval of named executive officer compensation is on the ballot.

• Shareholders will vote on the frequency of future advisory votes on executive compensation, with the board recommending an annual (1 year) vote.

• Ratification of Deloitte & Touche LLP as the independent registered public accounting firm for 2026 is included.

• Other business may be considered if properly brought before the meeting.

Board of directors and corporate governance

• Nine individuals are nominated for election to the board, including Simon Dingemans, Emmanuel Ligner, Gregory Lucier, Dame Louise Makin, Joseph Massaro, Sanjeev Mehra, Mala Murthy, Michael Severino, and Gregory Summe.

Executive compensation and say-on-pay

• An advisory vote will be held to approve named executive officer compensation.

• Shareholders will also vote on how frequently they wish to hold future advisory votes on executive compensation, with a recommendation for every year.