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( Mark One ) ☑ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30 , 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM Commission file number ΤΟ 1-11535 BNSF BURLINGTON NORTHERN SANTA FE , LLC Delaware ( Exact name of registrant as specified in its charter ) ( State or other jurisdiction of incorporation or organization ) 27-1754839 ( I.R.S. Employer Identification No. ) 2650 Lou Menk Drive Fort Worth , Texas ( Address of principal executive offices ) 76131-2830 ( Zip Code ) ( 800 ) 795-2673 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Trading symbol ( s ) None None Name of each exchange on which registered None Securities registered pursuant to Section 12 ( g ) of the Act : Limited Liability Company Membership Interest Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes ☑ No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( $ 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit and post such files ) . Yes ☑ No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of “ large accelerated filer , ” “ accelerated filer , ” “ smaller reporting company , ” and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer ☐ Accelerated filer ☐ Non - accelerated filer ☑ Smaller reporting company ☐ Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes ☐ No ☑ Registrant meets the conditions set forth in General Instruction H ( 1 ) ( a ) and ( b ) of Form 10 - Q and is therefore filing this Form 10 - Q with the reduced disclosure format permitted by General Instruction H ( 2 ) .