SCHEDULE 13G/A

1RT ACQUISITION CORP.

Class A Common Stock · CUSIP: G6757R105

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Harraden Circle Investments, LLC

  Shares: 1,500,192 · Class: 8.70%

• Harraden Circle Investors GP, LP

  Shares: 1,500,192 · Class: 8.70%

• Harraden Circle Investors GP, LLC

  Shares: 1,500,192 · Class: 8.70%

• Harraden Circle Investors, LP

  Shares: 726,088 · Class: 4.21%

• Harraden Circle Special Opportunities, LP

  Shares: 382,972 · Class: 2.22%

• Harraden Circle Strategic Investments, LP

  Shares: 234,056 · Class: 1.36%

• Harraden Circle Concentrated, LP

  Shares: 157,076 · Class: 0.91%

• Frederick V. Fortmiller, Jr.

  Shares: 1,500,192 · Class: 8.70%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.