MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

Blue Grotto Capital, LLC's Holding History (CIK: 0001764725)

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

Q4 2025

Shares 415,500 Value ($000) $66,397 Avg Close $148.21 Range $120.73 - $170.37

Q3 2025

Shares 211,848 Value ($000) $26,220 Avg Close $106.31 Range $88.17 - $132.24

Q2 2025

Shares 187,151 Value ($000) $18,595 Avg Close $80.86 Range $54.50 - $100.44

Q1 2025

Shares 355,221 Value ($000) $28,471 Avg Close $100.21 Range $75.89 - $124.28

Q4 2024

Shares 85,994 Value ($000) $8,977 Avg Close $106.91 Range $96.54 - $118.37

Q3 2024

Shares 100,001 Value ($000) $10,871 Avg Close $117.45 Range $99.10 - $145.63

Q2 2024

Shares 95,000 Value ($000) $12,405 Avg Close $124.55 Range $105.72 - $137.52

Q1 2024

Shares 115,000 Value ($000) $15,295 Avg Close $114.51 Range $94.23 - $132.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	415,500	$66,397	$148.21	$120.73 - $170.37
Q3 2025	211,848	$26,220	$106.31	$88.17 - $132.24
Q2 2025	187,151	$18,595	$80.86	$54.50 - $100.44
Q1 2025	355,221	$28,471	$100.21	$75.89 - $124.28
Q4 2024	85,994	$8,977	$106.91	$96.54 - $118.37
Q3 2024	100,001	$10,871	$117.45	$99.10 - $145.63
Q2 2024	95,000	$12,405	$124.55	$105.72 - $137.52
Q1 2024	115,000	$15,295	$114.51	$94.23 - $132.85