1RT ACQUISITION CORP.

Ticker: ONCH CUSIP: G6757R105 Class: USD CL A ORD SHS

DAVIDSON KEMPNER CAPITAL MANAGEMENT LP's Holding History (CIK: 0001595082)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 25,000 Value ($000) $255 Avg Close $10.30 Range $10.16 - $10.50

Q3 2025

Shares 25,000 Value ($000) $261 Avg Close $10.28 Range $10.18 - $10.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	25,000	$255	$10.30	$10.16 - $10.50
Q3 2025	25,000	$261	$10.28	$10.18 - $10.63