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Northwest Natural Gas Co. 
 OR
  SEC # 73020


        
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The Company    Business    Risk Factors    Competition    Management    Stockholders
 
 
2/23/24 
2/24/23 
2/25/22 
2/26/21 
 
 10-K
 10-K
 10-K
 10-K
 
2/23/24 
11/3/23 
8/3/23 
5/4/23 
2/24/23 
11/8/22 
8/4/22 
5/4/22 
2/25/22 
11/5/21 
8/13/21 
8/13/21 
8/5/21 
5/5/21 
2/26/21 
11/5/20 
8/7/20 
 
 10-K
 10-Q
 10-Q
 10-Q
 10-K
 10-Q
 10-Q
 10-Q
 10-K
 10-Q
 424B2
 S-3ASR
 10-Q
 10-Q
 10-K
 10-Q
 10-Q
 
 
 



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