Biglari Holdings files 13D after Jack in the Box Inc (JACK) adopts poison pill

M.Cap: $426 million | Jack in the Box Inc. operates and franchises Jack in the Box quick-service restaurants (QSRs) and Qdoba Mexican Eats (Qdoba) fast-casual restaurants.

Biglari Holdings

On July 10, 2025, Biglari Holdings filed a Schedule 13D following the Board’s adoption of a poison pill, stating they may engage with management on potential changes to operations, governance, or capital structure, and may also communicate with other shareholders or third parties under confidentiality agreements. Source

Jana Partners

On February 15, 2018, Jana Partners disclosed 7.3% and stated that it had discussions with the company regarding the capital structure, margins, capital allocation, franchise mix, and operations. It stated that it may have further discussions with the company regarding these and other topics including governance and Board composition. Source

On October 25, 2018, Jana Partners (6.7%) entered into a confidentiality and standstill letter agreement with the company. Under the Confidentiality Agreement, Jana Partners agreed to maintain the confidentiality of certain business information to be furnished by the company to Jana Partners and to abide by customary standstill obligations, subject to certain exceptions. Source

On October 29, 2018, the company and Jana Partners entered into a Cooperation Agreement. Pursuant to it, the company and Jana Partners will cooperate in good faith to agree upon two individuals recommended by Jana Partners (each a “New Independent Director”) to be added to the Board of Directors. Source

On January 4, 2019, the company and Jana Partners (6%) entered into an amendment to the Cooperation Agreement pursuant to which the deadline to appoint the new independent directors was extended to March 15, 2019. Source

On January 14, 2019, Jana Partners reduced its stake to 3.4%.

On April 25, 2019, the Company and Jana Partners entered into Amendment No. 3 to the Cooperation Agreement between the Company and Jana Partners dated October 29, 2018. Pursuant to which the Company added two individuals to the board on May 27, 2019. Source