Norfolk Southern and activist investor Ancora struck a deal to avert a proxy fight at the railroad.

Norfolk Southern CEO Alan Shaw is out effective immediately and will be replaced by finance chief Mark George.

The focus on Nabanita Nag, the chief legal officer at the railroad, has not been reported, and comes as CEO Alan Shaw is expected to resign.

Norfolk Southern is working with outside legal advisors on the probe, which is in its early stages.

The company will pay a $15 million fine for alleged violations of the Clean Water Act as part of the federal settlement.

Norfolk Southern shareholders elected three of Ancora’s seven director nominees, Ancora Alternatives president Jim Chadwick said Thursday.

ESG-focused investors and unions should back Norfolk Southern activist Ancora and its CEO pick Jim Barber, Institutional Shareholder Services said on Thursday.

ISS recommended that shareholders support five of Ancora’s seven nominees and seven Norfolk Southern nominees.

Norfolk Southern shareholders should vote for activist Ancora’s nominees, proxy advisory firm Glass Lewis recommended, a strong sign of support ahead of a May 9 meeting.

The BLET Teamsters said they would back activist Ancora’s efforts to oust Norfolk Southern CEO Alan Shaw in favor of new management.