Transactions
14
Insider / Arthur J. Gallagher & Co.
Bay Walter D.
General Counsel at Arthur J. Gallagher & Co.
- Company
- Arthur J. Gallagher & Co.
- Ticker
- AJG
- First filing on record
- December 23, 2025
- Latest trade on record
- August 24, 2026
- SEC filings
- EDGAR ↗
Bay Walter D., General Counsel at Arthur J. Gallagher & Co., has disclosed 14 transactions in AJG since December 23, 2025: 0 purchases (0 open-market buys) and 4 sales, worth about $9.9M at the reported prices. The latest was filed August 26, 2026, 2 days after the trade.
Open-market buys
0
Sales
4
Avg. disclosure lag
2.4d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Bay Walter D. made no purchases and 4 sales worth $7.9M, plus 10 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Bay Walter D. has traded 1 stock on record; the largest by dollars is AJG.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| M | Option exercise or conversion | 6 | 48,710 | $1.6M |
| A | Grant or award | 3 | 26,024 | $450K |
| F | Shares withheld for tax | 2 | 3,038 | $637K |
| S | Open-market sale | 2 | 27,850 | $7.3M |
| G | Gift | 1 | 1,724 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 10 | 0 | 3 · $3.9M |
| 2025 | 4 | 0 | 1 · $4.0M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| AJG | Sell S | August 24, 2026 | August 26, 2026 | 2d | 12,000 | $270 | $3.2M | Form 4 ↗ | ||
| AJG | Option / conversion M | March 31, 2026 | April 1, 2026 | 1d | 1,415 | — | — | derivative | Form 4 ↗ | |
| AJG | Sell F | March 31, 2026 | April 1, 2026 | 1d | 627 | $216 | $135K | Form 4 ↗ | ||
| AJG | Option / conversion M | March 31, 2026 | April 1, 2026 | 1d | 1,415 | $216 | $306K | Form 4 ↗ | ||
| AJG | Sell F | March 15, 2026 | March 17, 2026 | 2d | 2,411 | $208 | $501K | Form 4 ↗ | ||
| AJG | Option / conversion M | March 15, 2026 | March 17, 2026 | 2d | 7,090 | — | — | Form 4 ↗ | ||
| AJG | Option / conversion M | March 15, 2026 | March 17, 2026 | 2d | 7,090 | — | — | Form 4 ↗ | ||
| AJG | Other A | March 15, 2026 | March 17, 2026 | 2d | 7,090 | — | — | Form 4 ↗ | ||
| AJG | Other A | March 4, 2026 | March 6, 2026 | 2d | 1,982 | $227 | $450K | derivative | Form 4 ↗ | |
| AJG | Other A | March 1, 2026 | March 3, 2026 | 2d | 16,952 | — | — | derivative | Form 4 ↗ | |
| AJG | Option / conversion M | December 19, 2025 | December 23, 2025 | 4d | 15,850 | — | — | derivative | Form 4 ↗ | |
| AJG | Other G | December 19, 2025 | December 23, 2025 | 4d | 1,724 | — | — | Form 4 ↗ | ||
| AJG | Sell S | December 19, 2025 | December 23, 2025 | 4d | 15,850 | $255 | $4.0M | Form 4 ↗ | ||
| AJG | Option / conversion M | December 19, 2025 | December 23, 2025 | 4d | 15,850 | $80 | $1.3M | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 26, 2026 | Form 4 | 0000354190-26-000199 | 1 | published | EDGAR ↗ |
| April 1, 2026 | Form 4 | 0000354190-26-000114 | 3 | published | EDGAR ↗ |
| March 17, 2026 | Form 4 | 0000354190-26-000075 | 4 | published | EDGAR ↗ |
| March 6, 2026 | Form 4 | 0000354190-26-000058 | 1 | published | EDGAR ↗ |
| March 3, 2026 | Form 4 | 0000354190-26-000016 | 1 | published | EDGAR ↗ |
| December 23, 2025 | Form 4 | 0000354190-25-000056 | 4 | published | EDGAR ↗ |
Other insiders at Arthur J. Gallagher & Co.
- GALLAGHER THOMAS JOSEPH President 20 rows
- GALLAGHER J PATRICK JR CEO 18 rows
- Gallagher Patrick Murphy Chief Operating Officer 18 rows
- Mead Christopher E VICE PRESIDENT 18 rows
- Jain Vishal VICE PRESIDENT 17 rows
- HOWELL DOUGLAS K VP & Chief Financial Officer 16 rows
- Hudson Scott R Vice President 15 rows
- Pesch Michael Robert Vice President 12 rows
- Bloom Mark H. Vice President 9 rows
- CARY RICHARD C Controller, CAO 7 rows
Everyone on file, with contracts and lobbying under the company's name: Arthur J. Gallagher & Co..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 14 | December 23, 2025 | August 26, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.