The chief academic officer for the University of Hawaii at Manoa announced he is resigning from the post but said the decision was not a result of complaints lodged last year by faculty and staff over alleged bullying and racist and sexist behavior.

Reed Dasenbrock, who has been vice chancellor of academic affairs at Manoa since 2009, said he will return to teaching after 20 years as an administrator at Manoa and in New Mexico.

“That is a long time. I think this is the right time to announce that I plan to return soon to my faculty position in English, especially given the changes in the UH administration including changes in the Manoa leadership and after the satisfactory resolution of the complaint by a number of faculty against me,” Dasenbrock said Thursday in an email to faculty.

The deans of UH Manoa’s 15 schools and colleges report to Dasenbrock, as do some associate and assistant vice chancellors. In all, nearly 4,500 employees work in units that report to him.

He noted some of the accomplishments of his office in his email, including improvements to the university’s four- and six-year graduation rates, securing accreditation for Manoa’s professional schools and establishing several new STEM (science, technology, engineering and math) degree programs.

“Although the intervening years have seen their challenges, this has also been a period of tremendous accomplishment at UH Manoa,” he said.

Dasenbrock was the subject of a wide-ranging complaint sent to Manoa Chancellor Robert Bley-Vroman last spring. In it 22 faculty and staff members accused him of close to 30 incidents that “reflect behavior unbecoming a senior executive.” He was accused of harassing and intimidating female employees, making racist remarks and denying resources to programs or units led by faculty members who have accused him of unfair treatment — allegations that Dasenbrock has denied.

The university opened an investigation in May 2015 and appointed a three-member fact-finding committee made up of university officials outside of Manoa. A final report was turned over to former UH executive Linda Johnsrud, who was tasked with issuing a final decision as to whether policies around workplace harassment or other policies were violated.

A decision was issued in recent weeks, but a university spokesman said because it’s a personnel matter that did not result in termination or suspension, details cannot be disclosed.

The Manoa Faculty Senate — whose 10-member Executive Committee includes seven faculty members who signed the complaint against Dasenbrock — passed a resolution in January expressing a “lack of confidence” in Dasenbrock and asking that he be immediately removed from his post.