X0306 4 2018-06-12 0 0000849869 SILGAN HOLDINGS INC SLGN 0001199501 HORRIGAN D GREG C/O SILGAN HOLDINGS INC. 4 LANDMARK SQUARE - SUITE 400 STAMFORD CT 06901 1 0 1 0 Common Stock 2018-06-12 4 A 0 3235 A 7830025 D Common Stock 5645730 I By GRAT Common Stock 1233584 I By Horrigan Family Limited Partnership Common Stock 34634 I By Trust These securities are restricted stock units that were granted on June 12, 2018 pursuant to the Silgan Holdings Inc. Amended and Restated 2004 Stock Incentive Plan and become fully vested on June 12, 2019. These restricted stock units will be settled in shares of Common Stock on a 1-for-1 basis upon vesting. These shares of Common Stock are owned by grantor retained retained annuity trusts, of which the reporting person and his spouse are co-trustees with voting and dispositive power over the shares or the reporting person is the sole trustee with voting and dispositive power over the shares. The reporting person is the sole general partner of Horrigan Family Limited Partnership, with sole voting and dispositive power over the shares. These shares of Common Stock are owned by a family trust, of which the reporting person is the trustee with voting and dispositive power over the shares. /s/ Frank W. Hogan, III, Attorney-in-fact for D. Greg Horrigan 2018-06-14