ATLAS CORP. Form 6-K: Report of foreign private issuer

Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.

2025-11-06: Form 6-K/A; Period of report 2025-10-31; Description 6-K/A; Document d84814d6ka.htm.
2025-10-30: Form 6-K; Period of report 2025-10-30; Description 6-K; Document d918685d6k.htm.
2025-10-08: Form 6-K; Period of report 2025-10-08; Description 6-K; Document d21920d6k.htm.
2025-08-14: Form 6-K; Period of report 2025-06-30; Description 6-K; Document scq220256-k.htm.

Filed	Form	Period of report	Description	Document
2025-11-06	6-K/A	2025-10-31	6-K/A	d84814d6ka.htm
2025-10-30	6-K	2025-10-30	6-K	d918685d6k.htm
2025-10-08	6-K	2025-10-08	6-K	d21920d6k.htm
2025-08-14	6-K	2025-06-30	6-K	scq220256-k.htm
2025-08-13	6-K	2025-06-30	6-K	atlascorpq220256-k.htm
2025-07-11	6-K	2025-07-11	6-K	d92861d6k.htm
2025-06-18	6-K	2025-06-18	6-K	d28492d6k.htm
2025-05-13	6-K	2025-03-31	6-K	scq120256-k.htm
2025-05-09	6-K	2025-03-31	6-K	atlascorpq120256-k.htm
2025-05-05	6-K	2025-05-05	FORM 6-K	d771251d6k.htm
2025-03-20	6-K	2024-12-31	6-K	sc-6kq42024.htm
2025-02-12	6-K	2025-02-12	6-K	d875152d6k.htm
2024-11-27	6-K	2024-09-30	6-K	scq320246-k.htm
2024-11-27	6-K	2024-09-30	6-K	atlascorpq320246-k.htm
2024-08-09	6-K	2024-06-30	6-K	scq220246-k.htm
2024-08-09	6-K	2024-06-30	6-K	atlascorpq220246-k.htm
2024-05-14	6-K	2024-03-31	6-K	scq120246-k.htm
2024-05-10	6-K	2024-03-31	6-K	atlascorpq120246-k.htm
2024-03-18	6-K	2023-12-31	6-K	sc-6kq42023.htm
2023-11-22	6-K	2023-09-30	6-K	scq32023-6xk.htm
2023-11-21	6-K	2023-09-30	6-K	atlascorpq320236-k.htm
2023-10-31	6-K	2023-10-31	6-K	d547917d6k.htm
2023-10-12	6-K	2023-10-12	6-K	d514641d6k.htm
2023-08-23	6-K	2023-06-30	6-K	sc-6kx2023x06x30.htm
2023-08-23	6-K	2023-06-30	6-K	atlascorpq220236-k.htm
2023-05-17	6-K	2023-03-31	6-K	sc-6kx2023x03x31.htm
2023-05-17	6-K	2023-03-31	6-K	atlascorpq120236-k.htm
2023-03-28	6-K	2023-03-26	6-K	d489448d6k.htm
2023-03-20	6-K	2022-12-31	6-K	sc-6k2022x12x31.htm
2023-02-24	6-K	2023-02-24	6-K	d449365d6k.htm
2023-02-14	6-K	2023-02-14	6-K	d434235d6k.htm
2023-02-02	6-K	2023-02-01	6-K	d443274d6k.htm
2022-12-21	6-K	2022-12-21	6-K	d418890d6k.htm
2022-12-19	6-K	2022-12-16	6-K	d433270d6k.htm
2022-12-02	6-K	2022-12-01	6-K	d424926d6k.htm
2022-11-23	6-K	2022-09-30	6-K	sc-6kx2022x09x30.htm
2022-11-21	6-K	2022-09-30	6-K	atlascorpq320226-k.htm
2022-11-01	6-K	2022-10-31	6-K	d353336d6k.htm
2022-08-18	6-K	2022-06-30	6-K	sc-6kx2022x06x30.htm
2022-08-12	6-K	2022-06-30	6-K	atlascorpq220226-k.htm
2022-08-05	6-K	2022-08-04	6-K	d285498d6k.htm
2022-05-19	6-K	2022-03-31	6-K	sc-6kx2022x03x31.htm
2022-05-13	6-K	2022-03-31	6-K	atlascorpq120226-k.htm
2022-03-25	6-K	2021-12-31	6-K	sc-6kx2021x12x31.htm
2021-11-15	6-K	2021-09-30	6-K	atco-6k_20210930.htm
2021-11-10	6-K	2021-09-30	6-K	atco-6k_20210930.htm
2021-09-23	6-K	2021-09-23	6-K	ny20000400x1_6k.htm
2021-08-23	6-K	2021-08-23	6-K	d218844d6k.htm
2021-08-20	6-K	2021-06-30	6-K	atco-6k_20210630.htm
2021-08-16	6-K	2021-06-30	6-K	atco-6k_20210630.htm
2021-07-14	6-K	2021-07-14	6-K	d159840d6k.htm
2021-06-28	6-K	2021-06-28	6-K	atco-6k_20210628.htm
2021-06-14	6-K	2021-06-14	6-K	d180582d6k.htm
2021-05-27	6-K	2021-05-27	6-K	d157605d6k.htm
2021-05-14	6-K	2021-03-31	6-K	atco-6k_20210331.htm
2021-05-13	6-K	2021-05-13	6-K	d119597d6k.htm
2021-05-10	6-K	2021-03-31	6-K	atco-6k_20210331.htm
2021-05-04	6-K	2021-05-03	6-K	d158931d6k.htm
2021-03-30	6-K	2020-12-31	6-K	atco-6k_20201231.htm
2021-01-12	6-K	2021-01-12	6-K	d100786d6k.htm
2020-12-23	6-K	2020-12-21	FORM 6-K	d24579d6k.htm
2020-12-17	6-K	2020-12-17	FORM 6-K	d63418d6k.htm
2020-12-16	6-K	2020-09-30	6-K	atco-6k_20200930.htm
2020-11-10	6-K	2020-09-30	6-K	atco-6k_20200930.htm
2020-09-23	6-K	2020-09-23	FORM 6-K	nc10014513x1_6k.htm
2020-09-14	6-K	2020-09-11	FORM 6-K	d59611d6k.htm
2020-08-13	6-K	2020-06-30	6-K	atco-6k_20200630.htm
2020-05-11	6-K	2020-03-31	6-K	atco-6k_20200331.htm
2020-03-10	6-K	2020-03-10	FORM 6-K	d824631d6k.htm