X0306 4 2016-04-06 0000813828 CBS CORP CBS, CBS.A 0001347941 Ambrosio Anthony G 51 WEST 52ND STREET NEW YORK NY 10019 1 Sr.EVP Chief Admin & HR Ofcr CBS Class B common stock 2016-04-06 4 M 0 8250.0000 5.2000 A 8250.0000 D CBS Class B common stock 2016-04-06 4 S 0 8250.0000 54.6423 D 0.0000 D CBS Class B common stock 5314.0000 I By 401(k) CBS Class B common stock 1.4598 I By Custodian For Child CBS Class B common stock 15071.0000 I By Family Trust #9 CBS Class B common stock 11115.0000 I By Family Trust #10 CBS Class B common stock 16251.0000 I By Family Trust #4 CBS Class B common stock 17801.0000 I By Family Trust #5 CBS Class B common stock 35000.0000 I By Family Trust #7 CBS Class B common stock 50000.0000 I By Family Trust #8 CBS Class B common stock 13927.0000 I By Family Trust A CBS Class B common stock 13927.0000 I By Family Trust B CBS Class B common stock 15405.0000 I By FamilyTrust #6 Employee Stock Option (right to buy) 5.2000 2016-04-06 4 M 0 8250.0000 0.0000 D 2010-02-24 2017-02-24 CBS Class B common stock 8250.0000 51750.0000 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.27 to $54.94, inclusive. The reporting person undertakes to provide upon request by the staff of the U.S. Securities and Exchange Commission, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Since the Reporting Person's last ownership report, shares of CBS Class B common stock were transferred from the Reporting Person to Family Trust #10. Right to buy under Issuer's long term incentive plan. These options vested in four equal annual installments beginning on February 24, 2010. /s/ Anthony G. Ambrosio 2016-04-07