SCHEDULE 13G/A

ONTERRIS, INC.

Common Stock · CUSIP: 615111101

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

• BAMCO INC /NY/

  Shares: 1,859,070 · Class: 5.27%

• Baron Capital Group, Inc.

  Shares: 2,160,463 · Class: 6.12%

• Baron Capital Management, Inc.

  Shares: 301,393 · Class: 0.85%

• Ronald Baron

  Shares: 2,160,463 · Class: 6.12%

• Baron Discovery Fund

  Shares: 1,419,000 · Class: 4.02%

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