| 2019-12-16 | Argo Group International Holdings, Inc. | A | +30.8K sh | — | — | 801,806 |
| 2019-12-16 | Argo Group International Holdings, Inc. | F | −30.4K sh | $65.29 | −$1.99M | 771,364 |
| 2019-05-30 | Argo Group International Holdings, Inc. | G | −2,159 sh | — | — | 769,205 |
| 2019-05-05 | Argo Group International Holdings, Inc. | F | −71.8K sh | $76.69 | −$5.5M | 777,845 |
| 2019-03-29 | Argo Group International Holdings, Inc. | F | −2,865 sh | $70.66 | −$202K | 849,488 |
| 2019-03-27 | Argo Group International Holdings, Inc. | F | −1,377 sh | $71.75 | −$98.8K | 852,353 |
| 2019-03-15 | Argo Group International Holdings, Inc. | A | +24.3K sh | — | — | 853,730 |
| 2019-03-15 | Argo Group International Holdings, Inc. | A | +17.3K sh | — | — | 846,731 |
| 2019-03-10 | Argo Group International Holdings, Inc. | F | −4,441 sh | $69.07 | −$307K | 829,478 |
| 2019-02-25 | Argo Group International Holdings, Inc. | F | −2,041 sh | $70.37 | −$144K | 833,919 |
| 2018-11-30 | Argo Group International Holdings, Inc. | M | +15K sh | $26.19 | +$393K | 850,868 |
| 2018-11-30 | Argo Group International Holdings, Inc. | F | −5,708 sh | $68.83 | −$393K | 845,160 |
| 2018-11-30 | Argo Group International Holdings, Inc. | S | ▼−9,292 sh | $68.94 | ▼−$641K | 835,868 |
| 2018-11-30 | Argo Group International Holdings, Inc. | M | −15K sh | — | — | 78,047 |
| 2018-11-29 | Argo Group International Holdings, Inc. | M | +15K sh | $26.19 | +$393K | 850,868 |
| 2018-11-29 | Argo Group International Holdings, Inc. | F | −5,726 sh | $68.61 | −$393K | 845,142 |
| 2018-11-29 | Argo Group International Holdings, Inc. | S | ▼−9,274 sh | $68.92 | ▼−$639K | 835,868 |
| 2018-11-29 | Argo Group International Holdings, Inc. | M | −15K sh | — | — | 93,047 |
| 2018-11-09 | Argo Group International Holdings, Inc. | M | +15.2K sh | $26.19 | +$399K | 851,106 |
| 2018-11-09 | Argo Group International Holdings, Inc. | F | −167 sh | $69.00 | −$11.5K | 850,939 |
| 2018-11-09 | Argo Group International Holdings, Inc. | S | ▼−272 sh | $68.72 | ▼−$18.7K | 850,667 |
| 2018-11-09 | Argo Group International Holdings, Inc. | F | −1,284 sh | $68.04 | −$87.4K | 849,383 |
| 2018-11-09 | Argo Group International Holdings, Inc. | S | ▼−2,051 sh | $68.00 | ▼−$139K | 847,332 |
| 2018-11-09 | Argo Group International Holdings, Inc. | F | −4,477 sh | $67.07 | −$300K | 842,855 |
| 2018-11-09 | Argo Group International Holdings, Inc. | S | ▼−6,987 sh | $66.82 | ▼−$467K | 835,868 |
| 2018-11-09 | Argo Group International Holdings, Inc. | M | −15.2K sh | — | — | 108,047 |
| 2018-08-22 | Argo Group International Holdings, Inc. | S | ▼−15K sh | $63.19 | ▼−$948K | 835,754 |
| 2018-06-13 | Argo Group International Holdings, Inc. | G | −2,650 sh | — | — | 850,652 |
| 2018-06-13 | Argo Group International Holdings, Inc. | G | +1,450 sh | — | — | 14,745 |
| 2018-06-11 | Argo Group International Holdings, Inc. | M | +70.8K sh | $19.37 | +$1.37M | 894,141 |
| 2018-06-11 | Argo Group International Holdings, Inc. | F | −40.8K sh | $63.95 | −$2.61M | 853,302 |
| 2018-06-11 | Argo Group International Holdings, Inc. | M | −70.8K sh | — | — | 0 |
| 2018-05-11 | Argo Group International Holdings, Inc. | S | ▼−17.9K sh | $61.83 | ▼−$1.1M | 823,387 |
| 2018-05-09 | Argo Group International Holdings, Inc. | M | +77.1K sh | $19.37 | +$1.49M | 886,173 |
| 2018-05-09 | Argo Group International Holdings, Inc. | F | −44.9K sh | $62.15 | −$2.79M | 841,240 |
| 2018-05-09 | Argo Group International Holdings, Inc. | M | −77.1K sh | — | — | 70,754 |
| 2018-05-04 | Argo Group International Holdings, Inc. | M | +182K sh | — | — | 809,037 |
| 2018-05-04 | Argo Group International Holdings, Inc. | M | −182K sh | — | — | 0 |
| 2018-03-27 | Argo Group International Holdings, Inc. | A | +6,999 sh | — | — | 626,560 |
| 2018-03-19 | Argo Group International Holdings, Inc. | A | +19.3K sh | — | — | 619,561 |
| 2018-03-14 | Argo Group International Holdings, Inc. | F | −3,397 sh | $56.65 | −$192K | 519,401 |
| 2018-03-12 | Argo Group International Holdings, Inc. | F | −4,441 sh | $55.20 | −$245K | 522,798 |
| 2018-03-07 | Argo Group International Holdings, Inc. | M | +9,000 sh | $19.36 | +$174K | 536,239 |
| 2018-03-07 | Argo Group International Holdings, Inc. | F | −3,228 sh | $54.00 | −$174K | 533,011 |
| 2018-03-07 | Argo Group International Holdings, Inc. | S | ▼−5,772 sh | $54.02 | ▼−$312K | 527,239 |
| 2018-03-07 | Argo Group International Holdings, Inc. | M | −9,000 sh | — | — | 127,427 |
| 2018-02-26 | Argo Group International Holdings, Inc. | F | −1,774 sh | $60.30 | −$107K | 527,239 |
| 2018-02-22 | Argo Group International Holdings, Inc. | M | +7,863 sh | $22.27 | +$175K | 536,876 |
| 2018-02-22 | Argo Group International Holdings, Inc. | F | −2,946 sh | $59.45 | −$175K | 533,930 |
| 2018-02-22 | Argo Group International Holdings, Inc. | S | ▼−4,917 sh | $59.40 | ▼−$292K | 529,013 |