Joseph John Corso - 03 Jun 2026 Form 4 Insider Report for NLIGHT, INC. (LASR)

Reporting relationship: Chief Financial Officer
Issuer ticker: LASR
Reported as of: 03 Jun 2026
Net transaction value: -$577,741
SEC form: 4
Accepted by SEC: 05 Jun 2026, 18:36:34 UTC
Prior SEC filing: 21 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Julie Dimmick, as attorney-in-fact

Key filing fact

Joseph John Corso filed Form 4 for NLIGHT, INC. (LASR) on 05 Jun 2026.

Key facts

This page summarizes Joseph John Corso's Form 4 filing for NLIGHT, INC. (LASR).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 05 Jun 2026, 18:36.

Change

Previous filing in this sequence was filed on 21 May 2026.
Current net transaction value: -$577,741.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001914846 Primary reporting owner

Corso Joseph John

Relationship: Chief Financial Officer
Address: 4637 NW 18TH AVENUE, CAMAS
Signature: /s/ Julie Dimmick, as attorney-in-fact
Signature date: 05 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LASR transaction

Common Stock

Sale

Transaction value: $299,482
Shares: -3,840
Change %: -2.2%
Price: $77.99
Shares after: 173,732
Date: 03 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3

LASR transaction

Common Stock

Sale

Transaction value: $278,259
Shares: -3,817
Change %: -2.2%
Price: $72.90
Shares after: 169,915
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F3, F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 5 footnotes

Footnote F1

This reported sale represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

Footnote F2

The reported transaction involves sale transactions from $77.99 to $77.99 per share. The weighted average price per share was $77.99. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

Footnote F3

Includes common stock owned and unvested restricted stock units.

Footnote F4

These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

Footnote F5

The reported transaction involves sale transactions from $72.90 to $72.90 per share. The weighted average price per share was $72.90. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.