72 filings
S-3ASR
Northern States Power Co
18 Apr 24
Automatic shelf registration
4:24pm
424B2
Southwestern Public Service
24 May 22
Prospectus for primary offering
11:02am
FWP
Southwestern Public Service
23 May 22
Free writing prospectus
3:40pm
424B5
Southwestern Public Service
23 May 22
Prospectus supplement for primary offering
8:54am
S-3ASR
Northern States Power Co
22 Apr 21
Automatic shelf registration
5:27pm
424B2
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24 Feb 21
Prospectus for primary offering
2:12pm
FWP
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23 Feb 21
Free writing prospectus
3:30pm
424B5
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23 Feb 21
Prospectus supplement for primary offering
8:44am
424B2
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12 May 20
Prospectus for primary offering
3:12pm
FWP
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11 May 20
Free writing prospectus
4:09pm
424B5
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11 May 20
Prospectus supplement for primary offering
8:39am
424B2
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12 Jun 19
Prospectus for primary offering
2:12pm
FWP
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11 Jun 19
Free writing prospectus
4:04pm
424B5
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11 Jun 19
Prospectus supplement for primary offering
8:39am
424B2
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30 Oct 18
Prospectus for primary offering
3:39pm
FWP
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29 Oct 18
Free writing prospectus
4:04pm
424B5
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29 Oct 18
Prospectus supplement for primary offering
8:46am
S-3ASR
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18 Apr 18
Automatic shelf registration
12:00am
424B2
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3 Aug 17
Prospectus for primary offering
12:00am
424B5
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2 Aug 17
Prospectus supplement for primary offering
12:00am