MKS INC.

CUSIP: 55306NAB0 Class: None

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q4 2025
Shares 36,548,000 Value ($000) $46,701 Avg Close — Range —
Q3 2025
Shares 37,185,000 Value ($000) $40,803 Avg Close — Range —
Q2 2025
Shares 37,307,000 Value ($000) $36,937 Avg Close — Range —