National Instruments Securities Litigation

Important Notice about a Securities Class Action. You may be a Class Member. The Notice may affect your legal rights. Please read it carefully.

Important Dates

If applicable, write to the Court about why you do not like the Settlement, the Plan of Allocation, and/or the request for attorneys’ fees and expenses. You will still be a member of the Class. Objections must be received by the Court and counsel on or before December 18, 2026. If you submit a written objection, you may (but do not have to) attend the Settlement Hearing.

January 13, 2027 at 2:30 p.m. Eastern Time

The Court will hold a Settlement Hearing at 2:30 p.m., on January 13, 2027, before the Honorable Denise L. Cote, at the United States District Court for the Southern District of New York, Daniel Patrick Moynihan United States Courthouse, 500 Pearl Street, New York, NY 10007, Courtroom 18B. At the hearing, the Court will consider whether the Settlement and the Plan of Allocation are fair, reasonable, and adequate. If there are objections, the Court will consider them, even if the objectors do not ask to speak at the hearing. The Court will listen to people who have asked to speak at the hearing. The Court may also decide the amount of attorneys’ fees and expenses to award to Lead Counsel and any award to Lead Plaintiff. At or after the Settlement Hearing, the Court will decide whether to approve the Settlement and the Plan of Allocation.

The only way to be eligible to receive a payment from the Settlement. Proofs of Claim must be postmarked or submitted online on or before January 14, 2027.

YOU ARE HEREBY NOTIFIED , pursuant to Rule 23 of the Federal Rules of Civil Procedure and an Order of the United States District Court for the Southern District of New York (the “Court”), that the above-captioned action (the “Litigation”) has been certified as a class action, except for certain Persons who are excluded from the Class by definition as set forth in the Stipulation and Agreement of Settlement dated September 11, 2026 (the “Stipulation”) and the detailed Notice of Proposed Settlement of Class Action (the “Settlement Notice”).

YOU ARE ALSO HEREBY NOTIFIED that Court-appointed Lead Plaintiff and Class Representative Wayne County Employees’ Retirement System (“Lead Plaintiff”) and defendants National Instruments Corporation (“National Instruments”), Eric Starkloff, and Michael McGrath (“Defendants”) have reached a proposed settlement of the Litigation on behalf of the Class for $28,000,000 in cash (the “Settlement”). If approved by the Court, the Settlement will resolve all claims in the Litigation.

YOU ARE ALSO HEREBY NOTIFIED that a hearing (the “Settlement Hearing”) will be held on January 13, 2027 , at 2:30 p.m., before the Honorable Denise L. Cote at the United States District Court for the Southern District of New York, Daniel Patrick Moynihan United States Courthouse, 500 Pearl Street, New York, NY 10007, Courtroom 18B, to determine whether: (1) the Settlement of the Litigation as set forth in the Stipulation for $28,000,000 in cash should be approved by the Court as fair, reasonable, and adequate; (2) the Judgment as provided under the Stipulation should be entered dismissing the Litigation with prejudice; (3) to award Lead Counsel’s attorneys’ fees and expenses out of the Settlement Fund (as defined in the Settlement Notice) and, if so, in what amount; (4) to award Lead Plaintiff its costs and expenses in representing the Class out of the Settlement Fund and, if so, in what amount; and (5) the Plan of Allocation should be approved by the Court as fair, reasonable, and adequate.