Kennedy Jr.'s confirmation in doubt, the nominee for secretary of the Department of Health and Human Services declared in a written statement to senators on Friday that, if confirmed, he will divest his financial stake in an ongoing civil lawsuit against a vaccine manufacturer.

Robert F. Kennedy Jr. also disclosed that he had reached at least one settlement agreement with a company or individual that has accused him of “misconduct or inappropriate behavior.”

Kennedy Jr. is revising his ethics agreement to divest his interest in litigation against an HPV vaccine maker and directing the stake to his adult son, The New York Times reported Friday, citing a written response to questions from senators who are weighing his confirmation as Health and Human Services secretary.

Robert F. Kennedy Jr. faced aggressive questions about his skepticism of vaccines and other issues during the first of two scheduled Senate confirmation hearings.

Robert F. Kennedy Jr., President Trump’s nominee for Health and Human Services secretary, told senators Friday he will divest his financial stake in a lawsuit against pharmaceutical giant Merck over its vaccine that protects against human papillomavirus.