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Advanced Drainage Systems (WMS) CEO makes 2,000-share gift

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

For ADVANCED DRAINAGE SYSTEMS, INC. (WMS), President & Chief Executive Officer D. Scott Barbour reported a bona fide gift of 2,000 shares of common stock on 2026-08-20 from an indirect holding in his revocable trust, leaving that trust with 51,652 shares. The Form 4 also reports post-transaction holdings of common stock held directly (77,268 shares) and indirectly through various trusts and plans, including an irrevocable spousal access trust, GRATs, spouse’s trusts, and a KSOP allocation.

Positive

  • None.

Negative

  • None.
Insider BARBOUR D. SCOTT
Role See Remarks
Type Security Shares Price Value
Gift Common Stock F1 2,000 $0.00 $0.00
holding Common Stock -- -- --
holding Common Stock F2 -- -- --
holding Common Stock F3 -- -- --
holding Common Stock F3 -- -- --
holding Common Stock F4 -- -- --
holding Common Stock F5 -- -- --
holding Common Stock F6 -- -- --
Holdings After Transaction: Common Stock — 51,652 shares (Indirect, Reporting Person's Revocable Trust); Common Stock — 77,268 shares (Direct); Common Stock — 109,955 shares (Indirect, Reporting Person's Irrevocable Trust); Common Stock — 11,867 shares (Indirect, Reporting Person's 2024 GRAT); Common Stock — 46,500 shares (Indirect, Reporting Person's 2025 GRAT); Common Stock — 6,495 shares (Indirect, Spouse's Revocable Trust); Common Stock — 69,005 shares (Indirect, Spouse's Irrevocable Trust); Common Stock — 17,112.0923 shares (Indirect, By KSOP)
Footnotes (6)
  1. F1. Shares held in revocable trust for the benefit of the reporting person.
  2. F2. 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.
  3. F3. Shares held in GRATs of which the reporting person is trustee.
  4. F4. Shares held in revocable trust for the benefit of the reporting person's spouse.
  5. F5. 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.
  6. F6. Represents current allocation under KSOP.
Gifted shares 2,000 shares of Common Stock Bona fide gift by D. Scott Barbour on 2026-08-20
Gift price per share $0.0000 per share Reported for the 2,000-share bona fide gift
Revocable trust holdings after gift 51,652 shares Indirect holdings in reporting person’s revocable trust after 2,000-share gift
Direct holdings after transactions 77,268 shares Common Stock directly owned by D. Scott Barbour following 2026-08-20 entries
Irrevocable spousal access trust holdings 109,955 shares Indirect Common Stock holdings in an irrevocable spousal access trust
2024 GRAT holdings 11,867 shares Indirect Common Stock holdings in the reporting person’s 2024 GRAT
2025 GRAT holdings 46,500 shares Indirect Common Stock holdings in the reporting person’s 2025 GRAT
KSOP allocation 17,112.0923 shares Current allocation of Common Stock under KSOP
bona fide gift financial
"transaction code G described as "Bona fide gift" of Common Stock"
A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.
revocable trust financial
"Shares held in revocable trust for the benefit of the reporting person."
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
irrevocable spousal access trust financial
"Shares held in irrevocable spousal access trust established by the reporting person"
GRATs financial
"Shares held in GRATs of which the reporting person is trustee."
KSOP financial
"Represents current allocation under KSOP."

FAQ

What insider transaction did WMS report for D. Scott Barbour on this Form 4?

The Form 4 reports that D. Scott Barbour made a bona fide gift of 2,000 shares of ADVANCED DRAINAGE SYSTEMS, INC. common stock on 2026-08-20 from an indirect holding in his revocable trust, at a reported per-share price of $0.00.

How many WMS shares did D. Scott Barbour’s revocable trust hold after the gift?

After the reported 2,000-share gift, the revocable trust associated with D. Scott Barbour held 51,652 shares of ADVANCED DRAINAGE SYSTEMS, INC. common stock, as an indirect ownership position.

What are D. Scott Barbour’s direct holdings of WMS after the reported transactions?

The Form 4 shows that D. Scott Barbour’s direct ownership position in ADVANCED DRAINAGE SYSTEMS, INC. common stock is 77,268 shares following the reported transactions dated 2026-08-20.

What other indirect WMS holdings are reported for D. Scott Barbour?

Indirect holdings include shares in an irrevocable spousal access trust (109,955 shares), 2024 GRAT (11,867 shares), 2025 GRAT (46,500 shares), spouse’s revocable trust (6,495 shares), spouse’s irrevocable spousal access trust (69,005 shares), and a KSOP allocation (17,112.0923 shares).

Was the WMS insider gift made under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not checked, and there is no footnote stating that the 2,000-share bona fide gift of ADVANCED DRAINAGE SYSTEMS, INC. stock on 2026-08-20 was made pursuant to a Rule 10b5-1 trading plan.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
BARBOUR D. SCOTT

(Last)(First)(Middle)
C/O ADVANCED DRAINAGE SYSTEMS, INC.
4024 GREEN STRIPE LANE

(Street)
HILLIARD OHIO 43026

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
ADVANCED DRAINAGE SYSTEMS, INC. [ WMS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
See Remarks
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/20/2026G2,000D$051,652IReporting Person's Revocable Trust(1)
Common Stock77,268D
Common Stock109,955IReporting Person's Irrevocable Trust(2)
Common Stock11,867IReporting Person's 2024 GRAT(3)
Common Stock46,500IReporting Person's 2025 GRAT(3)
Common Stock6,495ISpouse's Revocable Trust(4)
Common Stock69,005ISpouse's Irrevocable Trust(5)
Common Stock17,112.0923IBy KSOP(6)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Shares held in revocable trust for the benefit of the reporting person.
2. 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.
3. Shares held in GRATs of which the reporting person is trustee.
4. Shares held in revocable trust for the benefit of the reporting person's spouse.
5. 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.
6. Represents current allocation under KSOP.
Remarks:
President & Chief Executive Officer
/s/ D. Scott Barbour, by Scott A. Cottrill as attorney-in-fact08/24/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)