ATCO Ltd (ACO-X:TSX) Insider Trading
ATCO Ltd (ACO-X:TSX) has 207 open-market buys and 145 sells in mapped SEDI filings on Wealth Awesome (CA$51.8m bought vs CA$36.5m sold; net CA$15.3m). 1 distinct insider name appear in the table below. Latest activity dated Dec 11, 2025.
Buys
207
Sells
145
Net flow
CA$15.3m
Insiders
1
12-month insider volume
Share volume by quarter for open-market equity trades. Buy value CA$51.8m · sell value CA$36.5m.
Sold · individuals Sold · companies Bought · individuals Bought · companies
Recent ACO-X insider transactions
Source: SEDI. Shares and CAD values use reported unit prices when available.
Dec 11, 2025
SellSouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 36 - Conversion or exchange
200 sh——
Dec 11, 2025
SellSouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 36 - Conversion or exchange
50,400 sh——
Dec 11, 2025
SellSouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 36 - Conversion or exchange
4,000 sh——
Jun 21, 2024
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
59,200 shCA$42.00CA$2.5m
Aug 12, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$47.60CA$238,000
Aug 12, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$47.70CA$238,500
Aug 11, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,200 shCA$47.50CA$247,000
Aug 10, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$47.25CA$236,250
Aug 10, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,000 shCA$47.40CA$331,800
Aug 08, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$46.40CA$232,000
Aug 05, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$46.40CA$232,000
Aug 05, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$46.25CA$231,250
Jun 14, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,050 shCA$44.50CA$224,725
Jun 14, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,000 shCA$44.75CA$313,250
Jun 13, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$44.50CA$222,500
Jun 13, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$44.70CA$223,500
Jun 13, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$44.65CA$223,250
Jun 13, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$45.00CA$225,000
Jun 10, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$45.10CA$225,500
Jun 10, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
15,000 shCA$45.35CA$680,250
Jun 10, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$45.50CA$227,500
Jun 09, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
500 shCA$45.35CA$22,675
Mar 09, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 30 - Acquisition or disposition under a purchase/ownership plan
299 shCA$42.53CA$12,716
Mar 09, 2022
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 30 - Acquisition or disposition under a purchase/ownership plan
1,413 shCA$42.37CA$59,869
Dec 31, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 30 - Acquisition or disposition under a purchase/ownership plan
886 shCA$42.14CA$37,336
Dec 31, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 30 - Acquisition or disposition under a purchase/ownership plan
5,459 shCA$42.35CA$231,189
Nov 15, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
3,750 shCA$41.10CA$154,125
Nov 12, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,000 shCA$41.35CA$289,450
Nov 12, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,000 shCA$41.20CA$288,400
Nov 11, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
4,000 shCA$41.35CA$165,400
Nov 10, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$41.20CA$206,000
Nov 10, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
1,000 shCA$41.10CA$41,100
Sep 14, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
11,400 shCA$41.00CA$467,400
Sep 13, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
1,500 shCA$40.85CA$61,275
Sep 13, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$41.00CA$205,000
Sep 13, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$41.20CA$205,993
Sep 13, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$41.23CA$206,155
Aug 20, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,400 shCA$42.98CA$318,016
Aug 19, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$43.00CA$215,000
Aug 19, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$42.80CA$214,000
Aug 18, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$43.00CA$215,000
Aug 18, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
3,100 shCA$42.80CA$132,680
Jun 11, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$45.85CA$229,249
Jun 11, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
3,000 shCA$45.95CA$137,850
Jun 10, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
6,400 shCA$45.25CA$289,600
Jun 09, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$45.25CA$226,250
Jun 07, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
4,000 shCA$44.60CA$178,400
Jun 04, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
1,800 shCA$44.20CA$79,560
May 20, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
7,200 shCA$43.85CA$315,720
May 19, 2021
BuySouthern, Nancy C.
4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer · 10 - Acquisition or disposition in the public market
5,000 shCA$43.92CA$219,600
| Date | Side | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Dec 11, 2025 | Sell | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 36 - Conversion or exchange | 200 | — | — |
| Dec 11, 2025 | Sell | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 36 - Conversion or exchange | 50,400 | — | — |
| Dec 11, 2025 | Sell | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 36 - Conversion or exchange | 4,000 | — | — |
| Jun 21, 2024 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 59,200 | CA$42.00 | CA$2.5m |
| Aug 12, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$47.60 | CA$238,000 |
| Aug 12, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$47.70 | CA$238,500 |
| Aug 11, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,200 | CA$47.50 | CA$247,000 |
| Aug 10, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$47.25 | CA$236,250 |
| Aug 10, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,000 | CA$47.40 | CA$331,800 |
| Aug 08, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$46.40 | CA$232,000 |
| Aug 05, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$46.40 | CA$232,000 |
| Aug 05, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$46.25 | CA$231,250 |
| Jun 14, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,050 | CA$44.50 | CA$224,725 |
| Jun 14, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,000 | CA$44.75 | CA$313,250 |
| Jun 13, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$44.50 | CA$222,500 |
| Jun 13, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$44.70 | CA$223,500 |
| Jun 13, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$44.65 | CA$223,250 |
| Jun 13, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$45.00 | CA$225,000 |
| Jun 10, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$45.10 | CA$225,500 |
| Jun 10, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 15,000 | CA$45.35 | CA$680,250 |
| Jun 10, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$45.50 | CA$227,500 |
| Jun 09, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 500 | CA$45.35 | CA$22,675 |
| Mar 09, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 30 - Acquisition or disposition under a purchase/ownership plan | 299 | CA$42.53 | CA$12,716 |
| Mar 09, 2022 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 30 - Acquisition or disposition under a purchase/ownership plan | 1,413 | CA$42.37 | CA$59,869 |
| Dec 31, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 30 - Acquisition or disposition under a purchase/ownership plan | 886 | CA$42.14 | CA$37,336 |
| Dec 31, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 30 - Acquisition or disposition under a purchase/ownership plan | 5,459 | CA$42.35 | CA$231,189 |
| Nov 15, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 3,750 | CA$41.10 | CA$154,125 |
| Nov 12, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,000 | CA$41.35 | CA$289,450 |
| Nov 12, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,000 | CA$41.20 | CA$288,400 |
| Nov 11, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 4,000 | CA$41.35 | CA$165,400 |
| Nov 10, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$41.20 | CA$206,000 |
| Nov 10, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 1,000 | CA$41.10 | CA$41,100 |
| Sep 14, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 11,400 | CA$41.00 | CA$467,400 |
| Sep 13, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 1,500 | CA$40.85 | CA$61,275 |
| Sep 13, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$41.00 | CA$205,000 |
| Sep 13, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$41.20 | CA$205,993 |
| Sep 13, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$41.23 | CA$206,155 |
| Aug 20, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,400 | CA$42.98 | CA$318,016 |
| Aug 19, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$43.00 | CA$215,000 |
| Aug 19, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$42.80 | CA$214,000 |
| Aug 18, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$43.00 | CA$215,000 |
| Aug 18, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 3,100 | CA$42.80 | CA$132,680 |
| Jun 11, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$45.85 | CA$229,249 |
| Jun 11, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 3,000 | CA$45.95 | CA$137,850 |
| Jun 10, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 6,400 | CA$45.25 | CA$289,600 |
| Jun 09, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$45.25 | CA$226,250 |
| Jun 07, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 4,000 | CA$44.60 | CA$178,400 |
| Jun 04, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 1,800 | CA$44.20 | CA$79,560 |
| May 20, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 7,200 | CA$43.85 | CA$315,720 |
| May 19, 2021 | Buy | Southern, Nancy C. 4 - Director of Issuer, 6 - Director or Senior Officer of 10% Security Holder, 7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6), 5 - Senior Officer of Issuer | 10 - Acquisition or disposition in the public market | 5,000 | CA$43.92 | CA$219,600 |
ACO-X coverage & insider notes
News →- 8h
- 3d
- 4d
- Jul 20
- Jul 13
About this data
- Issuer
- ATCO Ltd
- Ticker
- ACO-X:TSX
- Exchange
- TSX
- Filing system
- SEDI (Canada)
- Shares bought
- 1,171,967
- Shares sold
- 849,112
FAQ
What insider trades has ACO-X reported on SEDI?
ATCO Ltd (ACO-X:TSX) has 207 open-market buys and 145 sells in mapped SEDI filings on Wealth Awesome (CA$51.8m bought vs CA$36.5m sold; net CA$15.3m). 1 distinct insider name appear in the table below. Latest activity dated Dec 11, 2025.
Where can I see ACO-X stock price and fundamentals?
Open the ATCO Ltd stock hub at /stocks/aco-x-to for price history, key stats, dividends, and related coverage.
What trades are included on this page?
Open-market and private equity-style common share transactions from SEDI. Options, warrants, RSUs, and opening balances are excluded so the table stays focused on cash equity activity.