X0609 4 2026-06-05 0001643615 Onterris, Inc. ONT 0001053442 GRAHAM PETER false 5120 NORTHSHORE DR NORTH LITTLE ROCK AR 72118 true false false false false Common Stock 2026-06-05 4 P false 25140 17.19 A 256689 D The price reported in Column 4 is a weighted average price. These shares of common stock of the Issuer were purchased in multiple transactions by the Reporting Person at prices ranging from $17.00 to $17.46, inclusive. The Reporting Person undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer full information regarding the number of shares of common stock acquired at each separate price within the range. /s/ Nasym Afsari, Attorney in Fact 2026-06-08