 PITTSBURGH--BUSINESS WIRE--Arconic Corporation NYSE: ARNC Arconic or the Company announced today it has purchased a group annuity contract from Massachusetts Mutual Life Insurance Company MassMutual and transferred approximately 1 billion of the Companys U.S. pension plan obligations and related plan assets to MassMutual. Arconic Chief Executive Officer Tim Myers said, We are thoughtfully moving portions of our pension obligation to MassMutual, a highly-rated, well-respected in 