Advanced Drainage Systems, Inc. (WMS) Insider Trading

Last 12 months

Insiders sold $14.8M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. See Remarks D. Scott Barbour sold $11.9M on Nov 12, 2025, 18% of their stake, outside a plan. The last open-market buy by an executive or director was in Nov 2022.

Net open-market

−$14.8M

0 buys · 5 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 4

executives and directors

Last open-market buy

Nov 2022

Nov 7, 2022

Get an email when WMS's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Dec 3, 2025	Robert M Eversole Director	SoldNo plan	10,569	$152.82	$1.62M	17%	Form 4
Nov 26, 2025	Thomas J. Waun Sr. EVP, International	SoldNo plan	1,500	$155.00	$233k	9.5%	Form 4
Nov 11, 2025 – Nov 12, 2025	Thomas J. Waun Sr. EVP, International	SoldNo plan 2 parts	2,272	$149.05 average	$339k	13%	Form 4
Nov 12, 2025	D. Scott Barbour See Remarks	SoldNo plan 3 parts	80,030	$148.95 average	$11.9M	18%	Form 4
Nov 12, 2025	Tim A Makowski See Remarks	SoldNo plan 2 parts	4,901	$149.21 average	$731k	20%	Form 4
Jun 9, 2025	Darin S. Harvey EVP, Supply Chain & Logistics	SoldNo plan	4,464	$116.39	$520k	20%	Form 4
Feb 19, 2025	Darin S. Harvey EVP, Supply Chain & Logistics	SoldNo plan 2 parts	2,464	$125.00 average	$308k	12%	Form 4

Dec 3, 2025No plan
Robert M Eversole
Director · sold 10,569 at $152.82
$1.62M
17% of stake
Nov 26, 2025No plan
Thomas J. Waun Sr.
EVP, International · sold 1,500 at $155.00
$233k
9.5% of stake
Nov 11, 2025 – Nov 12, 2025No plan
Thomas J. Waun Sr.
EVP, International · sold 2,272 at avg $149.05
$339k
13% of stake
Nov 12, 2025No plan
D. Scott Barbour
See Remarks · sold 80,030 at avg $148.95
$11.9M
18% of stake
Nov 12, 2025No plan
Tim A Makowski
See Remarks · sold 4,901 at avg $149.21
$731k
20% of stake
Jun 9, 2025No plan
Darin S. Harvey
EVP, Supply Chain & Logistics · sold 4,464 at $116.39
$520k
20% of stake
Feb 19, 2025No plan
Darin S. Harvey
EVP, Supply Chain & Logistics · sold 2,464 at avg $125.00
$308k
12% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch WMS, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in WMS's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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