Aerojet Rocketdyne Holdings executive chairman Warren Lichtenstein has called Institutional Shareholder Services’ (ISS) recent report “devoid of substantive analysis” ahead of the June 30 special meeting.

The move comes a day after Aerojet retracted negative statements it had made about Lichtenstein earlier this year, after a judge ruled that CEO Eileen Drake violated a court order by using Aerojet resources to impugn Lichtenstein in the proxy contest.

In the Tuesday press release, Lichtenstein stated that “ISS clearly lacks the ability to evaluate the business aspects of companies in Aerojet Rocketdyne’s sector,” criticizing the proxy adviser’s analysis of the “respective slates’ business assessments, credentials, CEO candidates, and strategic plans.”

Lichtenstein also outlined a list of “10 critical factors” for shareholders to focus on as he believes they are “falling through the cracks amidst all the noise of this contest.”

The list includes claims that Aerojet CEO Eileen Drake and her slate “[have] not been honest with shareholders” about the financial and operational deterioration at the company, as well as their lack of a plan for “fixing the business and producing long-term value.”

In its latest presentation, Lichtenstein’s Save Aerojet campaign states that shareholders have to choose between “two distinct value propositions,” with his slate headed by CEO candidate Mark Tucker committed to “enhancing governance improvements” and “overseeing smarter capital allocation.”

Aerojet Rocketdyne’s stock was trading down around 2% early Tuesday at $37.53 per share.