West L.A.’s Leonard Green & Partners and TPG Capital of Forth Worth, Texas, will take a majority stake in Ellucian Co. of Fairfax, Va., a maker of software used by colleges and universities. Terms were not disclosed, but Reuters, citing sources familiar with the deal, reported the transaction could value Ellucian at $3.5 billion. TPG and Leonard Green are buying their stake from two other private equity firms, San Francisco’s Hellman & Friedman and Baltimore’s JMI Equity.

Beverly Hills firm Gores Group announced Monday that it has agreed to sell immunotherapy firm Therakos Inc. to Irish specialty pharmaceuticals company Mallinckrodt. The deal is valued at about $1.325 billion, and is expected to close by the end of October. Gores acquired Therakos, based in West Chester, Pa., from a subsidiary of New Brunswick, N.J., health care giant Johnson & Johnson in 2012.

Beverly Hills firm Levine Leichtman Capital Partners announced Wednesday that it has exited its investment in Casino Holding Investment Partners, which owns the Magnolia Bluffs casino and two restaurants in Natchez, Miss. Terms were not disclosed.