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Information Services Group insider acquires 39,683 shares

The vesting condition used a $6.00 threshold based on average closing prices over any ten consecutive trading-day period.

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Form Type
4

Rhea-AI Filing Summary

Information Services Group Inc. Vice Chairman Todd D. Lavieri reported that 39,683 performance-based RSUs fully vested on October 30, 2026, and 39,683 shares of common stock were acquired. On that date, 17,600 shares were withheld to satisfy tax obligations at a reported $6.10 per share. A footnote separately identifies 753 shares acquired under the issuer’s Amended and Restated 2007 Employee Stock Purchase Plan.

Insider Lavieri Todd D.
Role VICE CHAIRMAN
Type Security Shares Price Value
Exercise Performance Based RSUs F1 39,683 $0.00 $0.00
Exercise Shares of Common Stock F1 39,683 -- --
Tax Withholding Shares of Common Stock F2, F3 17,600 $6.10 $107K
Holdings After Transaction: Performance Based RSUs — 0 contracts (Direct); Shares of Common Stock — 1,241,941 shares (Direct)
Holdings Before and After: Performance Based RSUs, 39,683 to 0 contracts (Direct)
Footnotes (3)
  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 restricted stock units issued in accordance with Rule 16b-3.
  3. F3. Includes 753 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.
Performance-based RSUs vested 39,683 RSUs October 30, 2026
Common shares acquired 39,683 shares October 30, 2026
Shares withheld for tax obligations 17,600 shares October 30, 2026
Reported price per share withheld $6.10 per share Tax withholding transaction on October 30, 2026
Performance-condition market-price threshold $6.00 Measured average closing price
Closing-price measurement period 10 consecutive trading days Period used to measure the RSU performance condition
Employee Stock Purchase Plan shares 753 shares Identified in a footnote as acquired under the issuer’s Amended and Restated 2007 Employee Stock Purchase Plan
Performance-based RSUs technical
"100% of the performance-based RSUs were fully vested"
Performance-based restricted stock units (RSUs) are promises to deliver company shares to employees only if the business meets specific goals, such as revenue, profit, stock-price targets, or strategic milestones. For investors, they matter because they change future share supply and align management incentives with company results—like a salesperson whose bonus only pays out when sales targets are hit—so they can affect earnings, dilution, and confidence in leadership.
tax withholding obligations financial
"to satisfy tax withholding obligations"
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.
Employee Stock Purchase Plan financial
"acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

FAQ

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

How many III shares were withheld for taxes?

Todd D. Lavieri had 17,600 shares withheld on October 30, 2026, to satisfy tax withholding obligations. The reported price was $6.10 per share.

What performance condition triggered Todd D. Lavieri’s III RSU vesting?

The award provided that 100% of the RSUs would be earned if the measured market price reached $6.00 or above. The measure was the average closing price over any ten consecutive trading-day period beginning with the first anniversary of the June 3, 2024 award. The condition was met on October 30, 2026.

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

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SEC Form 4
FORM 4UNITED 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*
Lavieri Todd D.

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
VICE CHAIRMAN
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
10/30/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Shares of Common Stock10/30/2026M39,683A(1)1,258,788D
Shares of Common Stock10/30/2026F(2)17,600D$6.11,241,941(3)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Performance Based RSUs(1)10/30/2026M39,68310/30/202606/03/2028Common Stock39,683$00D
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 restricted stock units issued in accordance with Rule 16b-3.
3. Includes 753 shares acquired under the Information Services Group, Inc. Amended and Restated 2007 Employee Stock Purchase Plan.
/s/ Michael A. Sherrick, Attorney-in-Fact11/03/2026
** Signature of Reporting PersonDate
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)

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