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DIANNE S MILLS

CIK 1804778 · SVP & Chief HR Officer · last filed 2025-10-27

DIANNE S MILLS is a SVP & Chief HR Officer who has filed 17 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for AYI, was dated Oct 27, 2025. Across all open-market trades the lifetime net is −$1.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$6.07M

Companies

1

Total Filings

17

Lifetime Open-Market Net

-$1.35M

Filer Profile

Reported Address
C/O ACUITY BRANDS, INC.
1170 PEACHTREE STREET, NE, STE 1200
ATLANTA, GA 30309
Formerly Known As
MILLS DIANNE B (2020–2020)
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
AYI SVP & Chief HR Officer 18,179 $334.05 $6.07M -$1.35M 16 2025-10-27

Recent Filings

17 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2025-10-27 AYI Mixed +3,436 -$1.07M EDGAR
2024-10-29 AYI Mixed +2,536 -$695.3K EDGAR
2024-10-28 AYI Mixed +1,022 -$114.8K EDGAR
2024-03-05 AYI Tax (F) −255 -$64.2K EDGAR
2024-01-19 AYI Sell (S) −6,000 -$1.35M EDGAR
2024-01-18 AYI Notice (144) −6,000 -$1.35M EDGAR
2023-10-27 AYI Mixed +2,951 -$227.7K EDGAR
2023-10-26 AYI Mixed +2,085 -$61.1K EDGAR
2023-03-03 AYI Tax (F) −257 -$50.2K EDGAR
2022-10-27 AYI Tax (F) −134 -$24.4K EDGAR
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.