Latest filingSep 02, 2026Most recent Form 4
AJG
Arthur J. Gallagher & Co.
NYSEFinancialsInsurance Agents, Brokers & Service
Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$414M2 sells
Net open-market-$414M4 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period8transactions
- M · Option exercise · dominant4 · 50%
- S · Open-market sells2 · 25%
- A · Grants / awards1 · 13%
- F · Tax withholding1 · 13%
Activity by reported role
A joint filing can contribute to multiple roles8transactions
- VP · dominant6 · 75%
- Director1 · 13%
- GC1 · 13%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (3)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeBloom Mark H.Common Stock · Direct
5,023.485Aug 16, 2026
Mead Christopher ECommon Stock · Direct
22,223.4077Aug 19, 2026
Bloom Mark H.Phantom Stock · Direct
6,017.051Aug 16, 2026
Mead Christopher ENon-qualified Stock Option · Direct
7,590Aug 19, 2026
Bay Walter D.Common Stock · Direct
71,292.092Aug 24, 2026
Miskel Christopher C.Common Stock · Direct
10,826.439Sep 01, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 04 → Sep 04
LessMore
Top insiders
By absolute net value across the selected period- ME-$598.0k
- BH-$152.4k
- MC+$40.0k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
AJG transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| AJG | Miskel Christopher C. | DIR | grant | 153 | $4.00M | A | — | 0.0% | 09/02 | 09/01 |
| AJG | Mead Christopher E | VP | exercise | 3.50k | $0 | M | +0.9% | 08/20 | 08/19 | |
| AJG | Mead Christopher E | VP | sale | 3.50k | -$89.9M | S | +0.9% | 08/20 | 08/19 | |
| AJG | Mead Christopher E | VP | exercise | 3.50k | $30.1M | M | +0.9% | 08/20 | 08/19 | |
| AJG | Bloom Mark H. | VP | exercise | 1.28k | $0 | M | +5.5% | 08/18 | 08/16 | |
| AJG | Bloom Mark H. | VP | withholding | 607 | -$15.2M | F | +5.5% | 08/18 | 08/16 | |
| AJG | Bloom Mark H. | VP | exercise | 1.28k | $0 | M | +5.5% | 08/18 | 08/16 |
Arthur J. Gallagher & Co. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Arthur J. Gallagher & Co.?
Miskel Christopher C., Bay Walter D., Mead Christopher E, Bloom Mark H..
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Bay Walter D. reported a sale on Aug 24, 2026 valued at $324M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $4,140,559.50. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.