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Date Issuer Insider Transaction Amount New Balance ⓘ
The balance of securities held by registered holder at the time of the transaction. Insiders may direct multiple registered holders and hold multiple security types.
Filed 2026-06-30 18:37
Tx date 2026-06-30 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
10 - Acquisition or disposition in the public market 		$-19,980
-270 vol
$74.00 each 		4,200
Filed 2026-06-30 18:36
Tx date 2026-06-30 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
30 - Acquisition or disposition under a purchase/ownership plan 		$19,082
+290 vol
$65.80 each 		4,470
Filed 2026-06-18 16:49
Tx date 2026-06-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights RSU 2024-06-15
10 - Acquisition or disposition in the public market
-1,621 vol 		3,209
Filed 2026-06-18 16:49
Tx date 2026-06-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights RSU 2024-06-15
30 - Acquisition or disposition under a purchase/ownership plan
+189 vol 		4,830
Filed 2026-06-18 12:55
Tx date 2026-06-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights RSU 2025-06-15
10 - Acquisition or disposition in the public market
-1,541 vol 		4,622
Filed 2026-06-18 12:55
Tx date 2026-06-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights RSU 2025-06-15
30 - Acquisition or disposition under a purchase/ownership plan
+163 vol 		6,163
Filed 2026-06-16 15:24
Tx date 2026-06-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights Restricted Share Unit 2026-06-15
56 - Grant of rights
+6,000 vol 		6,000
Filed 2026-06-16 15:23
Tx date 2024-11-07 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Rights Restricted Share Unit 2026-06-15
00 - Opening Balance-Initial SEDI Report
Filed 2026-01-19 18:00
Tx date 2025-12-31 		$CU
Canadian Utilities Limited 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class A
30 - Acquisition or disposition under a purchase/ownership plan 		$76.32
+2 vol
$38.16 each 		5,314
Filed 2026-01-19 18:00
Tx date 2025-12-31 		$CU
Canadian Utilities Limited 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class A
30 - Acquisition or disposition under a purchase/ownership plan 		$35,576
+934 vol
$38.09 each 		5,312
Filed 2026-01-19 17:59
Tx date 2025-12-31 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
30 - Acquisition or disposition under a purchase/ownership plan 		$249.65
+5 vol
$49.93 each 		4,180
Filed 2026-01-19 17:58
Tx date 2025-12-31 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
30 - Acquisition or disposition under a purchase/ownership plan 		$34,113
+671 vol
$50.84 each 		4,175
Filed 2025-09-18 13:11
Tx date 2025-09-15 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Options 48.81 (2025-09-15)
50 - Grant of options
+5,000 vol 		5,000
Filed 2025-09-18 13:10
Tx date 2024-11-07 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Options 48.81 (2025-09-15)
00 - Opening Balance-Initial SEDI Report
Filed 2025-06-25 16:00
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
10 - Acquisition or disposition in the public market 		$-77,100
-1,500 vol
$51.40 each 		3,504
Filed 2025-06-25 16:00
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
51 - Exercise of options 		$71,310
+1,500 vol
$47.54 each 		5,004
Filed 2025-06-25 15:59
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Options 47.54 (2022-09-15)
51 - Exercise of options
-1,500 vol 		1,500
Filed 2025-06-25 15:58
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
10 - Acquisition or disposition in the public market 		$-15,423
-300 vol
$51.41 each 		3,504
Filed 2025-06-25 15:57
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
10 - Acquisition or disposition in the public market 		$-87,380
-1,700 vol
$51.40 each 		3,804
Filed 2025-06-25 15:57
Tx date 2025-06-24 		$ACO
ATCO LTD. 		Kalmacoff, Rebecca M.
5 - Senior Officer of Issuer
Direct Ownership
Non-Voting Shares Class I
51 - Exercise of options 		$90,760
+2,000 vol
$45.38 each 		5,504