Transaction Details

Footnotes

On December 17, 2025, the reporting person transferred 24,600 shares of common stock of Advanced Drainage Systems, Inc. from his 2023 GRAT to his revocable trust for the benefit of the reporting person, which transfer is exempt under Rule 16a-13. | Shares held in GRATs of which the reporting person is trustee. | Shares held in irrevocable remainder trust, of which the reporting person's spouse is trustee. The beneficiaries of the irrevocable trust are the reporting persons's nieces and nephew. | Reflects correction of previously reported gift of 1,800 from direct holdings on November 25, 2025 that was actually gifted from the reporting person's revocable trust. | Shares held in revocable trust for the benefit of the reporting person. | Shares held in irrevocable spousal access trust established by the reporting person, of which the reporting person's spouse is a co-trustee. The beneficiaries of the irrevocable trust are the reporting person and his children. | Shares held in revocable trust for the benefit of the reporting person's spouse. | Shares held in irrevocable spousal access trust established by the reporting person's spouse, of which the reporting person is a co-trustee. The beneficiaries of the irerrevocable trust include the reporting person's spouse and his children. | Represents current allocation under KSOP.