Acadia Healthcare is planning a sizeable stock sale, according to SEC filings. 

Earlier Monday, the behavioral health company run by former executives of Psychiatric Solutions filed a shelf registration to sell $145 million worth of shares. All told, the sale involves about 8.25 million shares of Acadia, which would grow the company's shares outstanding by about a quarter.

In the filing, the company says that it intends to use the sale’s proceeds primarily to fund further acquisitions. Acadia officials note that, while they're not currently party to any definitive agreements for material acquisitions, they do have an active deal pipeline. Any leftover funds will go to fund general corporate operations.

The book-running managers for the sale are Citigroup, Jefferies and BofA Securities, along with co-managers Raymond James, RBC Capital Markets and Avondale Partners.

In addition to the offering, Acadia also announced today that it is parting ways with two veterans company veterans, who predate Joey Jacobs and co.’s investment in Acadia last year.

Norman Carter, formerly the CEO and most recently co-president, and Karen Prince, most recently division president and a former COO, have both resigned their positions with the company. Stepping into the president's role is Psych Solutions vet Brent Turner, who has served as co-president with Carter since February of last year. There is no word on Prince’s replacement in the filing.

Following news of the offering, Acadia’s stock (Ticker: ACHC) fell more than 3 percent in early trading but recovered slightly later in the session. At about 11:30 a.m. Central, shares were trading at $15.70.