Arthur J. Gallagher & Co AJG

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Arthur J. Gallagher & Co. Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 312.41 → 242.50 · -22.4%
315.140253.570192.000 1 2 3 4 5 6 7 8 9 10 11 12 13,14 15 16 17 18 19 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
248.0400 246.7800 241.1400 242.5000 962,855
251.9700 255.5000 247.1500 248.2200 1,046,900
250.9300 254.7600 249.7800 253.6600 976,100
Weekend
Weekend
257.6100 261.9200 252.3000 253.9000 1,530,700
250.6200 256.1400 250.0000 255.9300 1,443,500
255.6100 255.6100 246.3500 247.7700 1,851,800
257.2300 260.1900 253.8200 253.8300 1,369,100
255.9700 261.2700 255.9700 261.2300 1,337,200
Weekend
Weekend
254.9000 255.5000 250.9400 253.0900 1,033,000
254.1500 255.2200 251.7200 253.7600 1,473,400
253.3800 256.8700 251.8500 256.6100 1,942,500
254.0000 256.6300 252.0000 254.6700 1,887,100
251.3600 251.7900 247.8800 249.7700 1,868,700
Weekend
Weekend
No trading
240.9600 252.9600 240.3100 252.4400 2,741,400
230.8100 244.0800 229.6300 239.6700 3,061,500
226.8500 230.5800 224.4900 229.5700 1,651,700
226.4400 227.1900 223.2600 227.1200 1,542,600
Weekend
Weekend
220.5800 226.5600 219.6700 226.0100 2,225,600
219.7900 222.9800 217.8100 217.8600 1,406,100
217.6300 221.9800 215.1300 220.7600 3,195,800
213.6800 217.8700 211.9900 215.7800 2,312,700
213.9200 216.1200 208.0800 209.0800 2,128,800
Weekend
Weekend
No trading
216.1700 216.1800 211.2900 214.0600 2,848,400
216.5000 224.9900 215.6200 216.0900 1,614,600
19 · 8-K Pre-market · 08:51 ET 8-K ↗
217.0800 217.8700 214.2000 215.9000 1,372,700
217.3800 218.7500 214.4900 215.7400 1,544,700
Weekend
Weekend
220.7900 222.4000 217.2200 218.6900 1,790,800
221.8300 223.6600 220.5800 220.9000 2,479,300
219.1900 225.3400 215.8900 220.1400 2,026,700
214.5500 219.5200 212.5600 217.0500 1,950,600
213.4800 215.5900 211.5000 212.5200 1,902,100
Weekend
Weekend
212.2800 216.7300 212.0900 216.1400 1,462,900
207.4500 212.5200 206.4200 211.0000 1,694,100
203.8300 204.7300 199.6900 202.5000 1,999,500
204.2900 207.1400 200.7000 205.7700 1,504,400
200.5700 206.2500 200.0000 206.1000 1,416,000
Weekend
Weekend
201.8800 203.7300 200.3000 201.1100 1,788,100
202.9000 206.2000 200.0400 202.6500 1,139,900
205.0600 208.9900 202.0000 202.8500 1,596,900
202.9600 206.0100 202.1000 203.9600 2,265,800
No trading
Weekend
Weekend
206.5000 207.4100 203.1200 204.7500 1,240,300
201.9500 207.9500 200.0000 207.4100 1,351,700
203.3500 204.9800 199.6700 203.6100 1,470,500
209.2400 210.2400 203.4100 203.4500 1,961,800
199.8800 208.1500 198.8800 207.1500 1,614,000
Weekend
Weekend
199.7200 200.6700 196.3200 199.9500 2,388,400
195.1800 198.7400 193.4900 197.6800 3,020,100
18 · 8-K After market open · 11:47 ET 8-K ↗
194.7800 197.2200 190.7500 192.0000 2,543,300
199.4000 202.9100 195.8100 197.4000 2,051,200
197.9500 200.3400 195.1400 198.5700 1,809,600
Weekend
Weekend
200.8900 201.1900 196.6500 198.8700 1,596,700
194.2700 203.1300 194.1500 201.9400 3,218,100
17 · 10-Q Next filing day · accepted 06 May, 20:31 ET 10-Q ↗
207.4000 209.0800 196.8000 196.9100 2,243,900
206.2900 207.6900 204.7200 205.8000 1,290,900
207.8900 211.0800 205.6400 207.0300 1,213,500
Weekend
Weekend
217.0000 218.8800 206.5700 208.1100 2,392,400
16 · 8-K After-hours · 16:19 ET 8-K ↗
210.3100 210.3100 202.2100 206.4000 3,093,700
212.8800 214.4000 210.3400 211.8100 1,288,200
215.8500 217.0000 209.7800 213.4200 1,367,600
213.1300 216.8900 211.5600 215.0600 1,343,500
Weekend
Weekend
216.9400 218.7900 213.9800 215.3800 1,228,500
220.7900 221.2800 217.5800 219.3700 995,300
223.3400 223.3400 218.5100 221.1100 1,309,400
223.6000 226.0000 222.2900 224.4600 1,550,500
221.6000 223.5700 220.7700 223.0700 1,307,900
Weekend
Weekend
224.0000 225.2400 220.7200 221.6100 1,851,000
224.1400 225.6900 222.8100 224.0800 1,574,500
220.5300 224.4600 219.0500 223.1700 1,221,300
221.2300 223.3900 219.6000 219.9100 1,178,300
214.2800 223.5300 213.6500 222.5000 2,301,800
Weekend
Weekend
217.0000 218.6500 206.2100 213.5500 5,172,700
219.0600 221.9500 217.0400 218.3900 1,637,900
219.7500 222.5200 218.2500 220.8000 1,709,200
219.0000 221.0800 217.1200 217.5700 1,850,400
217.1600 221.1000 216.8600 219.2700 1,437,100
Weekend
Weekend
15 · DEFA14A After-hours · 16:33 ET DEFA14A ↗
No trading
216.4100 221.3400 215.1300 217.6100 1,730,500
217.7800 219.7700 215.4700 216.3400 1,864,000
216.8200 219.1500 214.2000 216.5800 2,938,600
208.0100 217.2500 206.5000 215.9500 2,000,900
Weekend
Weekend
210.0700 213.1700 205.9000 207.1000 2,103,700
214.0300 217.2100 209.6000 210.2700 1,939,300
217.2900 218.8300 211.7100 213.5600 1,592,700
218.2700 218.3400 214.8900 216.2800 2,508,300
14 · DEFA14A After-hours · 16:38 ET DEFA14A ↗ 13 · DEF 14A After-hours · 16:34 ET DEF 14A ↗
217.3700 218.5400 215.0800 216.7400 2,136,000
Weekend
Weekend
210.3900 215.8600 210.2100 214.8200 3,845,300
210.1300 212.8200 207.8300 209.6800 2,049,900
208.2600 210.7800 204.5800 209.4800 1,671,800
12 · 8-K After-hours · 16:00 ET 8-K ↗
213.9700 216.1500 206.8000 209.1600 2,195,100
209.9700 212.7900 208.0000 211.8500 1,516,500
Weekend
Weekend
207.2700 208.9700 203.2100 207.9300 2,477,800
11 · 8-K After-hours · 16:22 ET 8-K ↗
208.8500 211.8700 203.4100 204.2100 3,725,000
215.0000 215.3400 209.5500 209.8400 1,922,900
216.9900 217.5200 210.3000 211.7200 1,880,400
226.9000 226.9000 215.2800 217.7800 1,977,700
Weekend
Weekend
228.2900 229.6500 224.7700 228.1300 2,191,800
224.4600 231.1000 223.9500 229.6500 2,057,200
224.5500 228.6400 223.3100 225.5800 3,109,600
228.0500 230.7500 221.4800 225.2300 2,289,400
227.5800 231.0200 225.6900 229.2700 1,942,000
Weekend
Weekend
228.4100 228.8100 223.5100 228.2000 2,959,700
219.6100 225.8900 218.6900 225.2200 2,313,200
216.7000 218.3100 213.5800 218.1300 2,263,200
213.4500 216.2300 209.4400 215.9800 2,985,000
214.5500 218.3400 213.0100 214.3300 2,375,100
Weekend
Weekend
220.1700 221.0000 214.5100 216.5100 2,064,000
213.8000 218.6700 213.0500 218.3700 2,708,900
213.6600 215.2300 210.3200 214.4900 2,387,700
10 · 10-K After-hours · 17:10 ET 10-K ↗
212.2600 216.0400 206.9300 214.0000 4,648,200
No trading
Weekend
Weekend
206.1400 212.0500 202.0800 208.4500 4,973,200
205.1800 207.8700 195.0000 204.7900 6,242,600
211.7300 212.9900 204.0300 205.3100 4,421,900
220.5000 224.6100 210.0100 212.5800 5,002,300
240.1200 242.0000 217.3700 217.7900 3,456,400
Weekend
Weekend
244.2600 245.2100 239.3300 241.5800 1,387,400
252.1800 253.2200 242.4600 242.7500 1,647,400
247.4700 254.4800 245.7300 249.5500 3,285,900
245.0000 250.1900 241.8600 247.7300 2,189,600
250.4200 255.1800 244.3400 245.2700 1,890,300
Weekend
Weekend
248.7300 256.6000 247.7900 249.3700 2,537,700
9 · 8-K After-hours · 16:20 ET 8-K ↗
244.4200 248.4600 241.7100 245.8400 2,250,600
242.5000 246.2000 240.8000 242.3700 1,728,200
250.0600 250.3800 236.5300 242.3300 3,488,100
253.7000 255.9500 252.0700 255.4100 1,592,800
Weekend
Weekend
248.5800 253.7200 248.5800 253.2100 1,504,800
249.1900 252.1100 247.1000 250.3800 2,703,800
255.7300 257.6700 244.9800 250.0800 2,710,500
255.6000 257.6100 254.2100 254.8800 2,115,500
No trading
Weekend
Weekend
255.2300 258.5900 253.3900 258.5200 2,126,400
256.1900 258.2700 255.0700 256.1500 2,452,100
256.7900 260.2900 255.8300 256.9800 2,608,000
263.9000 264.6900 255.3000 257.0000 2,950,900
265.1300 266.8700 262.4000 264.8400 1,815,100
Weekend
Weekend
264.4000 266.6700 263.6200 264.5900 1,012,200
259.4300 266.6100 258.0000 264.5400 1,408,000
259.2500 260.9400 254.1100 259.0000 1,928,300
262.1700 264.6400 259.4200 262.7700 1,347,700
254.7800 265.7500 253.1900 263.2400 1,543,500
Weekend
Weekend
257.1100 258.5700 254.3400 256.0000 1,252,700
No trading
261.0300 261.5400 258.7300 258.7900 1,018,400
263.0400 263.7900 261.7500 261.8300 1,017,100
261.5400 263.6900 261.5000 263.1400 1,367,500
Weekend
Weekend
260.7600 261.9100 259.3200 261.4800 844,600
No trading
257.9600 261.8000 257.9600 260.7700 545,100
258.0000 259.0000 256.4800 258.7000 1,153,600
251.9600 259.0000 251.3700 258.2500 1,590,300
Weekend
Weekend
252.8800 256.7100 252.1400 253.3900 3,971,200
249.7500 253.7700 249.1300 252.6400 1,262,900
252.0000 254.7800 250.2600 250.9000 1,666,200
256.1900 256.7400 249.2700 251.9800 2,062,400
8 · 8-K Pre-market · 08:10 ET 8-K ↗
254.2100 257.3700 253.0700 256.1900 2,328,000
Weekend
Weekend
249.0500 256.1800 248.9000 255.3800 2,238,600
242.1600 247.7600 240.8300 247.6200 2,426,100
239.4800 240.4500 236.3400 240.4500 1,745,100
238.6800 240.7500 237.8800 239.9100 1,067,000
238.7700 239.7900 236.7000 237.8500 1,358,000
Weekend
Weekend
244.6900 245.0000 238.6500 239.7100 1,771,900
245.7700 246.8900 243.8700 245.4100 1,281,700
244.4300 246.2300 242.6100 245.3600 1,519,200
245.8800 246.7400 243.3700 244.2200 1,691,900
248.4000 249.4700 246.0700 246.1000 1,418,400
Weekend
Weekend
247.7400 249.9900 246.6000 247.6200 756,600
No trading
250.5700 252.0000 247.8000 248.5200 1,011,000
249.8000 251.5900 247.7000 250.2400 966,400
251.2600 252.4400 244.7200 248.2100 2,094,700
Weekend
Weekend
249.0000 251.6500 246.8500 251.4100 1,710,200
245.7400 250.4300 245.6900 247.3000 1,571,200
258.5000 259.6100 247.6400 248.7200 2,191,200
259.5400 261.5600 256.0000 258.6400 1,814,900
259.4100 261.6300 257.9000 259.3100 2,174,900
Weekend
Weekend
258.2200 262.5900 254.5700 258.5100 1,828,600
255.2900 259.4500 254.4600 256.7100 2,174,300
254.4000 256.5300 253.1700 255.8600 1,256,800
251.3000 255.1500 250.4900 255.0000 1,338,500
248.8800 251.7400 247.0300 251.0600 1,463,100
7 · 10-Q Next filing day · accepted 07 Nov, 17:36 ET 10-Q ↗
Weekend
Weekend
245.6700 250.8900 244.6600 250.0100 1,746,600
246.9000 249.9500 244.2800 245.2400 1,456,700
250.8900 253.0000 248.0400 248.0500 1,673,100
244.5000 252.1100 242.7000 251.7000 2,473,800
249.4900 249.4900 239.4700 242.9800 2,586,700
Weekend
Weekend
242.7500 254.4300 242.7500 249.4900 5,066,700
6 · 8-K After-hours · 16:52 ET 8-K ↗
264.5000 265.8300 261.2900 262.0300 2,712,700
265.6200 268.8500 261.0400 262.0200 3,165,300
277.2400 279.0000 266.7100 267.5000 2,838,800
5 · 8-K/A Next filing day · accepted 27 Oct, 21:14 ET 8-K/A ↗
280.5600 281.6600 278.1000 279.0000 930,300
Weekend
Weekend
282.5000 284.1700 280.2900 280.7300 1,437,200
283.0300 284.3300 280.4100 282.4900 1,086,900
279.5200 284.0600 277.9200 283.0400 1,405,900
278.8000 280.6000 277.2200 279.0100 1,424,100
280.2200 280.8200 275.7300 279.2600 1,171,200
Weekend
Weekend
280.6200 284.3000 277.9500 280.4700 1,415,300
287.2700 288.3300 276.5000 280.1700 2,379,700
301.7300 304.5700 295.3600 296.1600 2,451,600
298.4500 303.9800 296.8700 303.7300 1,234,600
299.0500 301.7100 295.7800 298.0000 1,176,100
Weekend
Weekend
304.3000 305.7400 300.6600 301.7400 1,184,600
307.1100 307.1100 301.2900 302.2500 761,600
310.3500 310.3500 306.8400 306.9400 636,900
310.3900 313.0900 308.1800 309.8100 863,800
310.5000 311.6700 307.6800 309.1500 1,053,600
Weekend
Weekend
307.7800 313.5500 307.5800 310.4800 767,200
303.0700 308.7200 302.0000 308.6700 1,004,300
307.8700 309.5000 303.3500 305.8400 1,864,200
305.0000 310.4900 304.4600 309.7400 1,671,300
303.1500 305.8600 301.1000 305.7100 1,355,600
Weekend
Weekend
304.9200 308.8000 303.1800 304.1500 877,100
305.0600 306.8900 300.8200 303.0800 1,366,900
302.4800 305.6900 300.8400 304.5500 1,125,500
299.8500 304.5300 299.0100 304.3600 1,601,900
299.1100 300.5200 296.4900 300.0600 1,446,900
Weekend
Weekend
300.4000 301.2000 296.4400 299.6500 2,605,300
293.0000 297.0200 291.3100 296.7400 1,405,700
4 · 8-K Pre-market · 09:03 ET 8-K ↗
293.0500 295.2100 291.9900 292.6600 1,248,100
287.8100 292.7500 285.8000 291.4600 1,175,600
297.1600 298.1600 288.2000 289.4000 1,170,000
Weekend
Weekend
299.0100 300.8100 297.2200 297.2800 1,302,100
293.6000 301.0200 292.5800 300.6100 1,335,100
297.3400 298.3200 292.8300 293.1800 1,854,700
298.2400 300.4400 297.2300 298.5000 1,119,300
298.3100 300.0000 295.1400 299.1200 1,153,100
Weekend
Weekend
299.2400 300.8700 296.4300 299.1800 1,217,200
304.9600 305.4800 300.0800 300.2200 1,282,400
304.0000 305.9500 301.6700 303.7000 1,842,600
303.1700 303.2500 299.1400 302.5700 1,673,400
No trading
Weekend
Weekend
299.6800 303.1700 298.6400 302.7500 1,472,400
297.8800 299.9300 296.6200 299.6200 769,100
299.8800 302.4000 298.6700 298.7200 1,513,500
298.0600 300.2700 295.7400 300.2000 2,312,400
302.0000 303.0900 298.6200 298.6200 1,020,600
Weekend
Weekend
306.6800 307.3800 302.4600 303.1700 1,165,400
302.7800 306.3900 301.2600 305.3800 1,154,600
302.0900 305.1300 300.6400 302.6400 1,568,500
295.4400 301.0500 294.7300 300.9800 1,132,000
292.0200 296.5300 291.0800 294.5100 1,376,300
3 · 8-K Pre-market · 08:18 ET 8-K ↗
Weekend
Weekend
293.7000 294.7200 292.4300 292.7200 1,238,000
295.5000 295.5000 289.9300 293.4100 1,280,200
291.3400 295.4400 290.9200 295.1000 1,337,800
289.1000 291.2100 286.8200 290.6500 1,275,900
290.0000 291.6900 286.1700 288.9200 1,536,900
Weekend
Weekend
290.9500 293.9700 288.4200 289.4400 1,726,200
286.5400 290.0700 285.0800 289.9900 3,116,000
286.4200 288.0000 284.1400 286.2600 1,136,200
284.3100 288.0200 282.5300 285.7800 1,681,700
284.4900 286.8700 282.2300 284.6100 1,776,100
Weekend
Weekend
2 · 10-Q After market open · 14:43 ET 10-Q ↗
285.0000 286.0000 277.5300 284.1700 2,787,800
1 · 8-K After-hours · 17:07 ET 8-K ↗
282.0200 290.9300 281.8300 287.2500 2,554,700
291.1500 291.1500 284.9400 285.8400 2,920,400
307.9000 309.0500 287.6100 288.3500 4,081,200
315.0000 315.0000 308.2900 309.1200 1,237,200
Weekend
Weekend
310.1000 315.4800 310.1000 315.1400 897,400
309.5300 311.8300 309.0000 309.0600 738,200
313.6400 313.6400 308.7400 310.7900 659,400
308.8000 313.0300 308.3200 312.4100 1,107,900

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

19 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:51 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After market open · 11:47 ET Summarise
17 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 06 May, 20:31 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:19 ET Summarise
15 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:33 ET Summarise
14 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:38 ET Summarise
13 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:34 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:00 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:22 ET Summarise
10 10-K 10-K (opens SEC filing in a new tab) After-hours · 17:10 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:20 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:10 ET Summarise
7 10-Q 10-Q (opens SEC filing in a new tab) Next filing day · accepted 07 Nov, 17:36 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:52 ET Summarise
5 8-K/A 8-K/A (opens SEC filing in a new tab) Next filing day · accepted 27 Oct, 21:14 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:03 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:18 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After market open · 14:43 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:07 ET Summarise