Schedule 13G filing

PRIMECAP MANAGEMENT CO/CA/ disclosed a 10% stake in Southwest Airlines Co (LUV)

Schedule 13G · Filed Oct 5, 2026

PRIMECAP MANAGEMENT CO/CA/ reported owning 10% of Southwest Airlines Co (LUV) (49,003,285 shares) in a Schedule 13G filed Oct 5, 2026.

A 13G is a passive stake: the holder does not plan to push for changes.

Stake

Southwest Airlines Co

Stake

10% stake

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From a public Schedule 13G, linked above. Not investment advice, and not a recommendation to buy or sell.