AltaGas (ATGFF) SEC Filings & 10K Form $28.89 +0.34 (+1.19%) As of 04/17/2025 02:52 PM Eastern Add Compare Share Share SEC Filings Stock AnalysisAnalyst ForecastsChartHeadlinesSEC FilingsShort InterestBuy This Stock Recent AltaGas SEC Filings All Filing Types 1 10 10-D 10-K 10-M 10-Q 11-K 12b-25 13F 13H 144 15 15F 17-H 18 18-K 19b-4(e) 19b-4 19b-7 1-A 1-E 1-K 1-N 1-SA 1-U 1-Z 20-F 24F-2 25 2-E 3 4 40-F 5 6-K 7-M 8-A 8-K 8-M 9-M ABS DD-15E ABS-15G ABS-EE ADV ADV-E ADV-H ADV-NR ADV-W ATS ATS-R BD BD-N BDW C CA-1 CB CFPORTAL D F-1 F-10 F-3 F-4 F-6 F-7 F-8 F-80 F-N F-X ID MA MA-I MA-NR MA-W MSD MSDW n/a N-14 N-17D-1 N-17f-1 N-17f-2 N-18f-1 N-1A N-2 N-23c-3 N-27D-1 N-3 N-4 N-5 N-54A N-54C N-6 N-6EI-1 N-6F N-8A N-8B-2 N-8B-4 N-8F N-CR N-CSR N-MFP N-PX N-Q NRSRO N-SAR PF PILOT R31 S-1 S-11 S-20 S-3 S-4 S-6 S-8 SBSE SBSE-A SBSE-BD SBSE-C SBSE-W SCI SD SDR SE SF-1 SF-3 SIP T-1 T-2 T-3 T-4 T-6 TA-1 TA-2 TA-W TCR TH WB-APP X-17A-19 X-17A-5 Part I X-17A-5 Part II X-17A-5 Part IIA X-17A-5 Part IIB X-17A-5 Part III X-17A-5 Schedule I X-17F-1A Filing Types Include Ownership Filings Exclude Ownership Filings Only Show Ownership FIlings Ownership Filings Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame * Start Date * End Date Export to Excel No SEC filings found.(Data available from 1/1/2016 forward) Related Companies and Tools Related Companies AMIH 10K Form BKRP 10K Form CHKEZ 10K Form CHKEW 10K Form CHKEL 10K Form SNPMF 10K Form WLLBW 10K Form CCTC 10K Form DBRM 10K Form EONR 10K Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (OTCMKTS:ATGFF) was last updated on 4/20/2025 by MarketBeat.com Staff From Our PartnersClaim Your FREE Protection GuideIn the final days of his first term, Trump quietly left open an "off the books" wealth-protection loophole hid...American Alternative | SponsoredElon Reveals Why There Soon Won’t Be Any Money For Social SecurityElon Musk's Near-Death Experience Sparks Dire Warning for Americans After cheating death twice—once in a te...Colonial Metals | SponsoredTrump’s Top Secret $9 Trillion AI SuperweaponJeff Brown spotted Nvidia at $1. 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