[Form 4] nLIGHT, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Joseph John Corso, Chief Financial Officer of nLIGHT, Inc. (LASR), reported two mandatory "sell-to-cover" transactions tied to the vesting of restricted stock units. On 08/18/2025 he sold 5,991 shares at $26.69 per share and on 08/19/2025 he sold 8,449 shares at $26.28 per share to satisfy tax-withholding obligations. After the transactions the reporting person beneficially owned 336,922 shares, a figure that the filing notes includes both fully owned common stock and unvested restricted stock units. The filing clarifies these sales were required by the issuer's tax-withholding election and not discretionary trades. The Form 4 was executed by an attorney-in-fact on behalf of the reporting person.

Positive

• Sales were mandatory "sell-to-cover" transactions, indicating they were executed to satisfy tax withholding and were not discretionary trades by the CFO.
• Reporting was timely and complete for the two transactions with specific prices and post-transaction holdings disclosed.

Negative

• CFO's beneficial holding decreased by 14,440 shares (5,991 on 08/18/2025 and 8,449 on 08/19/2025), which reduces insider ownership in the short term.
• Form shows a material portion of holdings are unvested RSUs, meaning actual voting and saleable shares may change as vesting occurs.

Insights

Financial Analyst

TL;DR: Routine, non-discretionary sell-to-cover by CFO reduces share count by 14,440 shares; no new information on company operations.

The transactions are standard tax-withholding sales associated with RSU vesting and are disclosed to maintain Section 16 compliance. The total disposition of 14,440 shares represents a modest reduction in the CFO's beneficial holding; the filing states the remaining 336,922 shares include unvested RSUs, which limits the interpretation of immediate liquidity or intent. There is no indication of additional sales, options exercise, or derivative activity in this Form 4.

Corporate Governance Expert

TL;DR: Governance process working as expected: issuer-mandated sell-to-cover executed and disclosed promptly.

The filing demonstrates internal compliance with tax-withholding procedures and timely disclosure under Section 16. The clarification that sales were mandated by the issuer reduces concerns about insider signaling. The use of an attorney-in-fact to sign the form is consistent with common practice and does not indicate governance issues by itself. No material governance events are disclosed.

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
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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^*

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)
08/18/2025

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	08/18/2025		S		5,991(1)	D	$26.69	345,371(2)	D
Common Stock	08/19/2025		S		8,449(1)	D	$26.28	336,922(2)	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. The sale reported on this Form 4 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. Includes common stock owned and unvested restricted stock units.

Remarks:

	/s/ Julie Dimmick, as attorney-in-fact	08/20/2025
	** 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 did nLIGHT (LASR) CFO Joseph John Corso sell?

He sold a total of 14,440 common shares via two sell-to-cover transactions: 5,991 shares at $26.69 on 08/18/2025 and 8,449 shares at $26.28 on 08/19/2025.

Why were the shares sold by the LASR CFO?

The filing states the sales were mandated to cover tax-withholding obligations related to the vesting and settlement of restricted stock units; they were not discretionary sales.

How many LASR shares does the reporting person own after the transactions?

After the reported transactions the filing shows the reporting person beneficially owned 336,922 shares, which includes both owned shares and unvested RSUs.

Do these transactions involve options or derivatives for LASR?

No. Table II for derivative securities is empty; this Form 4 reports only non-derivative common stock sales.

Who signed the Form 4 for Joseph John Corso?

The Form 4 was signed by Julie Dimmick, as attorney-in-fact, on 08/20/2025 according to the filing.