MKS EVP sells 2,848.522 shares in open trade

MKS INC executive Eric Robert Taranto, EVP & GM, VSD, reported an open-market sale of common stock.

(Neutral)

(Negative)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

MKS INC executive Eric Robert Taranto, EVP & GM, VSD, reported an open-market sale of common stock. On May 11, 2026, he sold 2,848.522 shares at a weighted average price of $319.930 per share in multiple trades between $319.930 and $320.345. After this transaction, he directly holds 12,596.2394 shares of MKS common stock.

Insider Trade Summary

Net Seller: 2,848.522 shares

Net Sell 1 txn

Insider Taranto Eric Robert

Role EVP & GM, VSD

Sold 2,848.522 shs ($911K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,848.522	$319.93	$911K

Holdings After Transaction: Common Stock — 12,596.2394 shares (Direct)

Footnotes (1)

F1. This transaction was executed in multiple trades at prices ranging from $319.930 to $320.345. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.

Key Figures

Shares sold: 2,848.522 shares Weighted average sale price: $319.930 per share Price range of trades: $319.930–$320.345 per share +1 more

4 metrics

Shares sold 2,848.522 shares Open-market sale on May 11, 2026

Weighted average sale price $319.930 per share Common stock sale on May 11, 2026

Price range of trades $319.930–$320.345 per share Multiple trades in single transaction

Shares held after transaction 12,596.2394 shares Direct ownership following sale

Key Terms

open-market sale, weighted average sale price, Form 4

3 terms

open-market sale financial

"transaction_action: "open-market sale" for the common stock transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sale price financial

"The price reported above reflects the weighted average sale price."

Form 4 regulatory

"INSIDER FILING DATA (Form 4): { "issuerName": "MKS INC" ... }"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MKS (MKSI) report for Eric Robert Taranto?

MKS reported that executive Eric Robert Taranto completed an open-market sale of common stock. He sold 2,848.522 shares of MKS INC common stock as disclosed in a Form 4 insider filing for a single trading day.

At what price did Eric Robert Taranto sell MKS (MKSI) shares?

Eric Robert Taranto sold his MKS INC shares at a weighted average price of $319.930 per share. The Form 4 notes the sale was executed in multiple trades with individual prices ranging from $319.930 to $320.345 during that trading day.

How many MKS (MKSI) shares does Eric Robert Taranto hold after this sale?

Following the reported transaction, Eric Robert Taranto directly holds 12,596.2394 shares of MKS INC common stock. This post-transaction holding amount is disclosed in the Form 4 as the total number of shares beneficially owned after the open-market sale.

What was the size of the MKS (MKSI) insider sale on May 11, 2026?

On May 11, 2026, Eric Robert Taranto sold 2,848.522 shares of MKS INC common stock. The filing characterizes this as an open-market sale, with all shares sold on that date at prices just above $319.930 per share.

How was the reported sale price for the MKS (MKSI) insider trade calculated?

The reported sale price of $319.930 per share is a weighted average for all trades. The Form 4 footnote explains that the transaction occurred in multiple trades between $319.930 and $320.345, and full trade details are available upon request.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Accepted by SEC EDGAR 05/12/2026 - 03:19 PM EDT

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Taranto Eric Robert

(Last)

(First)

(Middle)

C/O MKS INC.

2 TECH DRIVE

(Street)

ANDOVER

MASSACHUSETTS

01810

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MKS INC [ MKSI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP & GM, VSD

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/11/2026		S		2,848.522	D	$319.93⁽¹⁾	12,596.2394	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was executed in multiple trades at prices ranging from $319.930 to $320.345. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.

	/s/ M. Kathryn Rickards, attorney-in-fact	05/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR