WB
Walter D. Bay
General Counsel

Walter D. Bay insider trades: Arthur J. Gallagher (AJG) stock sales

General Counsel, Arthur J. Gallagher Last trade Aug 24, 2026 82 Form 4 filings
$7.3M
Sold, last 12 months
2 sales
$0
Bought, last 12 months
0 buys
22
Open-market trades
since 2012
1
Company
last trade 2026

Trades on the price chart

Daily close, with an arrow on each day they bought or sold

Companies

Where Walter reports to the SEC

Open-market buys and sales

22 trades reported on SEC Form 4, newest first

DateStockTypeValue
Aug 24, 2026AJG↓ Sell$3.2M
Dec 19, 2025AJG↓ Sell$4.0M
Feb 13, 2025AJG↓ Sell$3.3M
Jul 30, 2024AJG↓ Sell$1.8M
Jun 18, 2024AJG↓ Sell$2.2M
May 20, 2024AJG↓ Sell$6.2M
Sep 15, 2023AJG↓ Sell$5.1M
Aug 10, 2022AJG↓ Sell$1.9M
Mar 16, 2022AJG↓ Sell$1.2M
Dec 10, 2020AJG↓ Sell$1.5M
Dec 17, 2019AJG↓ Sell$1.4M
Feb 15, 2019AJG↓ Sell$1.1M
Sep 14, 2018AJG↓ Sell$299K
Aug 16, 2018AJG↓ Sell$655K
Jan 29, 2018AJG↓ Sell$105K
Feb 14, 2017AJG↓ Sell$167K
Feb 2, 2017AJG↓ Sell$357K
Feb 5, 2015AJG↓ Sell$365K
Feb 13, 2013AJG↓ Sell$782K
Sep 13, 2012AJG↓ Sell$183K
Jun 18, 2012AJG↓ Sell$209K
Jun 11, 2012AJG↓ Sell$185K

Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.

Other AJG insiders

Open-market trades in the last 12 months

About Walter D. Bay's insider trades

Walter D. Bay is General Counsel at Arthur J. Gallagher (AJG). Since Jun 11, 2012, Walter has reported no open-market purchases and 22 sales worth $36.2M on SEC Form 4. In the last 12 months: 2 sales ($7.3M).

Their filings also include option exercises (40 filings), grants and awards (35 filings), shares withheld for taxes (27 filings), other transactions (18 filings). These aren't open-market trades and aren't counted above.

How to read insider trades

Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AJG insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.