Information Services Group CFO acquires 27,778 shares

Full vesting followed a measured average closing price of $6.00 or above over any ten consecutive trading days beginning with the award's first anniversary.

Available on EDGAR 11/03/2026 - 04:16 PM EST Accepted by SEC EDGAR 11/03/2026 - 04:15 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Information Services Group Inc. CFO Michael A. Sherrick had 27,778 performance-based RSUs fully vest on October 30, 2026, after the market-price condition was met, and acquired 27,778 common shares. The condition required a measured average closing price of $6.00 or above over any ten consecutive trading-day period beginning with the award’s first anniversary. A separate 16,486 common shares were withheld to satisfy tax withholding obligations.

Insider Trade Summary

27,778 shares exercised/converted

Exercise 3 txns

Insider Sherrick Michael A.

Role EVP & CHIEF FINANCIAL OFFICER

Type	Security	Shares	Price	Value
Exercise	Performance Based RSUs F1	27,778	$0.00	$0.00
Exercise	Shares of Common Stock F1	27,778	--	--
Tax Withholding	Shares of Common Stock F2	16,486	$6.10	$101K

Holdings After Transaction: Performance Based RSUs — 0 contracts (Direct); Shares of Common Stock — 375,843 shares (Direct)

Holdings Before and After: Performance Based RSUs, 27,778 to 0 contracts (Direct); Shares of Common Stock, 364,551 to 375,843 shares (Direct)

Footnotes (2)

1. F1. On June 3, 2024, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $6.00 or above This performance condition was met on October 30, 2026, and 100% of the performance-based RSUs were fully vested.
2. F2. Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

Key Figures

Performance-based RSUs vested: 27,778 RSUs Common shares acquired: 27,778 shares Shares withheld for tax obligations: 16,486 shares +1 more

4 metrics

Performance-based RSUs vested 27,778 RSUs October 30, 2026

Common shares acquired 27,778 shares October 30, 2026

Shares withheld for tax obligations 16,486 shares In connection with RSU vesting on October 30, 2026

Measured market-price threshold $6.00 or above Average closing price over any ten consecutive trading-day period beginning with the award’s first anniversary

Key Terms

Performance Based RSUs, market price goals, fully vested, Rule 16b-3

4 terms

Performance Based RSUs financial

"grant of RSUs that could be earned based on the achievement of market price goals"

market price goals financial

"achievement of market price goals"

fully vested financial

"100% of the performance-based RSUs were fully vested"

Rule 16b-3 regulatory

"issued in accordance with Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

FAQ

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

How many III shares did Michael A. Sherrick acquire, and how many were withheld?

Michael A. Sherrick acquired 27,778 common shares on October 30, 2026, when his performance-based RSUs vested; 16,486 shares were withheld to satisfy tax withholding obligations.

What performance target vested Michael A. Sherrick’s III RSUs?

The RSUs vested after the measured average closing price reached $6.00 or above over any ten consecutive trading-day period beginning with the award’s first anniversary. The award was granted on June 3, 2024, and the performance condition was met on October 30, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Sherrick Michael A.

(Last) (First) (Middle)

400 ATLANTIC STREET

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Information Services Group Inc. [ III ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CHIEF FINANCIAL OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/30/2026

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)
			Code	V	Amount	(A) or (D)	Price
Shares of Common Stock	10/30/2026		M		27,778	A	(1)	392,329	D
Shares of Common Stock	10/30/2026		F(2)		16,486	D	$6.1	375,843	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Performance Based RSUs	(1)	10/30/2026		M			27,778(1)	10/30/2026	06/03/2028	Common Stock	27,778	$0	0	D

Explanation of Responses:

1. On June 3, 2024, the Reporting Person received a grant of RSUs that could be earned based on the achievement of market price goals, which were measured as the average closing price of issuer's common stock over any ten consecutive trading day period beginning with the first anniversary of the award. 100% of the number of RSUs will be earned if the measured market price is $6.00 or above This performance condition was met on October 30, 2026, and 100% of the performance-based RSUs were fully vested.

2. Represents deemed disposition of shares of common stock to the Issuer as a result of withholding of shares of common stock to satisfy tax withholding obligations in connection with vesting of RSUs issued in accordance with Rule 16b-3.

	/s/ Michael A. Sherrick, Attorney-in-Fact	11/03/2026
	** 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)