One Gas, INC Schedule 13G passive stakes

State Street Corporation has disclosed beneficial ownership of 5.2% of ONE GAS INC's common stock as of June 30, 2026.

Wellington Management Group LLP and its affiliates have filed a Schedule 13G, reporting beneficial ownership of 4.2% of ONE Gas, Inc. common stock as of March 31, 2026.

American Century Investment Management has filed a Schedule 13G reporting a 5.4% beneficial ownership stake in ONE Gas, Inc.

Vanguard Capital Management has reported beneficial ownership of 5.19% of ONE Gas Inc.'s common stock as of March 31, 2026.

Vanguard Portfolio Management has reported beneficial ownership of 5.76% of ONE Gas Inc.'s common stock as of March 31, 2026.

The Vanguard Group has reported zero beneficial ownership in ONE Gas Inc. common stock following an internal realignment that disaggregated reporting responsibilities.

State Street Corporation has reported a 5% beneficial ownership stake in ONE GAS INC common stock as of December 31, 2025.

State Street Corporation has reported a 5.1% beneficial ownership stake in ONE GAS INC, holding over 3 million shares of common stock.

State Street Corporation has reported its beneficial ownership in ONE GAS INC has decreased to 4.8%, falling below the 5% threshold for mandatory Schedule 13G filings.

The Vanguard Group has reported an increased beneficial ownership stake in ONE Gas Inc, now holding 10.52% of the common stock.

American Century Investment Management, Inc. and its affiliated entities have filed an amended Schedule 13G, confirming a collective beneficial ownership of 6.6% in ONE Gas, Inc. as of March 31, 2025.

BlackRock, Inc. has filed an amended Schedule 13G, reporting a 12.8% beneficial ownership stake in ONE Gas, Inc.'s common stock as of March 31, 2025.