Insider profile

MILLS DIANNE S

OfficerTitleSVP & Chief HR OfficerView on SEC.gov ↗

This page tracks every SEC Form 4 filing since April 2023 by MILLS DIANNE S, SVP & Chief HR Officer: 17 transactions in total, none of them an open-market purchase, and 3 sales. Each record is parsed directly from the original filing, with amendments reconciled so a corrected filing never double-counts.

Activity summary

No insider transactions in the last 30 days. The most recent was on October 24, 2025, when Mills Dianne S sold 2,886 shares. The full history is listed below.

Quarterly balance

Buy and sell value by quarter, Q4 23 to Q4 25. MILLS DIANNE S sold in every quarter shown.

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $1.4M.

Track record

Total purchased

$1.4M

Total sold

0B · 3S transactions

Net seller

Overall direction

Most active in

AYI3S

Filing history: Oct 2023 — Oct 2025Under a 10b5-1 plan: 0%Full history: 17 filings

Scorecard

No buy track record for this insider.

Scoring an insider means measuring how the stock moved after their own open-market purchases. This insider has not made any, so there is nothing to measure. That is the normal case rather than a gap in the data: most insiders receive stock through awards and option exercises instead of buying it. See insiders who do have a record.

Transaction History

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	1d	1w	1m	3m	6m
Oct 24, 2025	Mills Dianne S	AYI	Tax Withholding	2,886	$370.34	$1.07M	-2.0%	-1.3%	-1.7%	-15.7%	-22.7%
Oct 24, 2025	Mills Dianne S	AYI	Award	6,322	—	—	-2.0%	-1.3%	-1.7%	-15.7%	-22.7%
Oct 26, 2024	Mills Dianne S	AYI	Tax Withholding	216	$303.09	$65K	-0.5%	+3.6%	+5.5%	+9.5%	-16.6%
Oct 25, 2024	Mills Dianne S	AYI	Award	4,830	—	—	-0.5%	+3.6%	+5.5%	+9.5%	-16.6%
Oct 25, 2024	Mills Dianne S	AYI	Tax Withholding	2,078	$303.09	$630K	-0.5%	+3.6%	+5.5%	+9.5%	-16.6%

12 more transactions hidden

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Reading an insider's Form 4 history

Corporate insiders — directors, officers, and holders of more than 10% of a company's stock — must report their trades to the SEC on Form 4 within two business days. Looking at one insider's filings over time shows whether they tend to buy on the open market (a discretionary use of their own money, generally the strongest signal), sell, or simply receive and exercise equity awards as compensation.

The track record above measures how this insider's past open-market purchases performed in the months after each filing. Trades made under a pre-scheduled Rule 10b5-1 plan are flagged because they carry no timing signal. To pull any insider's full history programmatically, see the insider trading API or our guide to reading Form 4 filings.