Exhibit 22.1

Subsidiary Issuers of Guaranteed Securities

As of December 31, 2023, Danaher Corporation (Parent Guarantor) was the sole guarantor of the following senior unsecured notes issued by:

DH Europe Finance S.a.r.l., a Luxembourg company and wholly-owned subsidiary of the Parent Guarantor:

•1.2% EUR notes due 2027

DH Europe Finance II S.a.r.l., a Luxembourg company and wholly-owned subsidiary of the Parent Guarantor:

•Euro-denominated commercial paper

•2.2% USD notes due 2024

•0.2% EUR notes due 2026

•0.45% EUR notes due 2028

•2.6% USD notes due 2029

•0.75% EUR notes due 2031

•1.35% EUR notes due 2039

•3.25% USD notes due 2039

•1.8% EUR notes due 2049

•3.4% USD notes due 2049

DH Switzerland Finance S.a.r.l., a Luxembourg company and wholly-owned subsidiary of the Parent Guarantor:

•1.125% CHF notes due 2028

DH Japan Finance S.a.r.l., a Luxembourg company and wholly-owned subsidiary of the Parent Guarantor:

•0.3% JPY notes due 2027

•0.65% JPY notes due 2032