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American Century Mutual Funds, Inc.

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

2

Stocks Covered

1

Latest Filing

Feb 13, 2026

Filings

SIBN

Si-Bone, Inc.

SC 13G/A · Feb 13, 2026

4.1%

1.8M shares

SIBN

Si-Bone, Inc.

SC 13G/A · Nov 14, 2025

5.3%

2.3M shares