NLIGHT (NASDAQ: LASR) CFO sells 25,328 shares in planned tax-related trades

Rhea-AI Filing Summary

NLIGHT, INC. Chief Financial Officer Joseph John Corso reported selling a total of 25,328 shares of common stock in open-market transactions. On March 5, 2026 he sold 13,038 shares at a weighted average price of $61.96 per share, and on March 6, 2026 he sold 12,290 shares at a weighted average price of $60.39 per share.

According to the disclosure, part of the sale was mandated to cover tax withholding obligations tied to the vesting and settlement of restricted stock units and was not a discretionary trade. The reported sales were effected under a Rule 10b5-1 trading plan adopted on September 15, 2025. After these transactions, he held 170,896 shares, including unvested restricted stock units.

Insider Trade Summary

Net Seller: 25,328 shares ($1,550,028)

Net Sell 2 txns

Insider Corso Joseph John

Role Chief Financial Officer

Sold 25,328 shs ($1.55M)

Type	Security	Shares	Price	Value
Sale	Common Stock	12,290	$60.39	$742K
Sale	Common Stock	13,038	$61.96	$808K

Holdings After Transaction: Common Stock — 170,896 shares (Direct)

Footnotes (1)

1. 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. The reported transaction involves sale transactions from $61.96 to $61.96 per share. The weighted average price per share was $61.96. 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. Includes common stock owned and unvested restricted stock units. These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025. The reported transaction involves sale transactions from $60.39 to $60.39 per share. The weighted average price per share was $60.39. 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.

Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Corso Joseph John

(Last) (First) (Middle)

4637 NW 18TH AVENUE

(Street)

CAMAS WA 98607

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NLIGHT, INC. [ LASR ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

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

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

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

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
Common Stock	03/05/2026		S		13,038(1)	D	$61.96(2)	183,186(3)	D
Common Stock	03/06/2026		S		12,290(4)	D	$60.39(5)	170,896(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. The reported transaction involves sale transactions from $61.96 to $61.96 per share. The weighted average price per share was $61.96. 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.

3. Includes common stock owned and unvested restricted stock units.

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

5. The reported transaction involves sale transactions from $60.39 to $60.39 per share. The weighted average price per share was $60.39. 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.

Remarks:

	/s/ Julie Dimmick, as attorney-in-fact	03/09/2026
	** 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.

FAQ

What insider transaction did NLIGHT (LASR) report for its CFO?

NLIGHT’s Chief Financial Officer Joseph John Corso reported selling 25,328 shares of common stock in two open-market transactions. The sales occurred on March 5 and March 6, 2026, and were executed under a pre-arranged Rule 10b5-1 trading plan adopted in September 2025.

At what prices did the NLIGHT (LASR) CFO sell his shares?

On March 5, 2026, the CFO sold 13,038 NLIGHT shares at a weighted average price of $61.96 per share. On March 6, 2026, he sold 12,290 shares at a weighted average price of $60.39 per share, both categorized as open-market sales.

Why did the NLIGHT (LASR) CFO sell some of his shares?

The filing states part of the reported sale was to cover tax withholding obligations linked to vesting and settlement of restricted stock units. This “sell to cover” transaction was mandated by the company’s election and is described as not being a discretionary transaction by the CFO.

Were the NLIGHT (LASR) CFO’s share sales under a trading plan?

Yes. The reported sales were executed under a Rule 10b5-1 trading plan adopted by the CFO on September 15, 2025. Such plans allow insiders to schedule trades in advance, providing a structured framework for transactions independent of later material nonpublic information.

How many NLIGHT (LASR) shares does the CFO hold after these sales?

After the March 6, 2026 transaction, the CFO held 170,896 shares of NLIGHT common stock. The filing notes this figure includes both common stock currently owned and unvested restricted stock units, reflecting his remaining equity stake after the reported open-market sales.

What total share volume did the NLIGHT (LASR) CFO sell in this Form 4?

Across the two reported transactions, the CFO sold 25,328 shares of NLIGHT common stock. This total combines 13,038 shares sold on March 5, 2026, and 12,290 shares sold on March 6, 2026, as disclosed in the Form 4 summary of net sell activity.