<SEC-DOCUMENT>0001104659-24-105851-index.html : 20241003
<SEC-HEADER>0001104659-24-105851.hdr.sgml : 20241003
<ACCEPTANCE-DATETIME>20241003161517
ACCESSION NUMBER:		0001104659-24-105851
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20241003
DATE AS OF CHANGE:		20241003
GROUP MEMBERS:		WILLIAM H. GATES III

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Otter Tail Corp
		CENTRAL INDEX KEY:			0001466593
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				270383995
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-84909
		FILM NUMBER:		241351671

	BUSINESS ADDRESS:	
		STREET 1:		215 S CASCADE ST
		STREET 2:		PO BOX 496
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56538-0496
		BUSINESS PHONE:		866-410-8780

	MAIL ADDRESS:	
		STREET 1:		215 S CASCADE ST
		STREET 2:		PO BOX 496
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56538-0496

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Otter Tail Holding Co
		DATE OF NAME CHANGE:	20090618

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CASCADE INVESTMENT, L.L.C.
		CENTRAL INDEX KEY:			0001052192
		ORGANIZATION NAME:           	
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		2365 CARILLON POINT
		CITY:			KIRKLAND
		STATE:			WA
		ZIP:			98033
		BUSINESS PHONE:		4258897900

	MAIL ADDRESS:	
		STREET 1:		2365 CARILLON POINT
		CITY:			KIRKLAND
		STATE:			WA
		ZIP:			98033

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CASCADE INVESTMENT LLC
		DATE OF NAME CHANGE:	19980102
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>tm2425155d1_sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: tm2425155d1_sc13da.htm

</DOCUMENT>
</SEC-DOCUMENT>