[Form 4] nLIGHT, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Joseph John Corso, Chief Financial Officer of nLIGHT, Inc. (LASR), reported insider sales on August 25, 2025 executed under a Rule 10b5-1 trading plan adopted March 14, 2025. The Form 4 shows two sale groupings that day: 12,191 shares sold at a weighted average price of $27.92 (range $27.26–$28.26) and 26,093 shares sold at a weighted average price of $28.47 (range $28.27–$28.74), for a total of 38,284 shares disposed. The filing reports post-transaction beneficial ownership of 299,211 shares after the first sale line and 273,118 shares after the second, and notes holdings include common stock and unvested restricted stock units. The Form 4 was signed by an attorney-in-fact on August 27, 2025.

Positive

• Sales were executed under a Rule 10b5-1 trading plan, indicating pre-planned, compliant transactions
• Filing discloses weighted average prices and execution ranges, enhancing transparency
• Post-transaction beneficial ownership is reported, including specification that amounts include unvested RSUs

Negative

• The reporting person disposed of 38,284 shares in total, reducing direct holdings from the higher pre-sale level to 273,118 shares after the second reported sale
• No per-price breakdown is provided in the Form 4; the filer states it will provide details on request, which delays full price-by-price transparency

Insights

Corporate Governance Expert

TL;DR: Routine, pre-planned insider sales under a 10b5-1 plan; disclosure appears complete and timely.

The reporting indicates the CFO executed sales under a Rule 10b5-1 plan adopted on 03/14/2025, which provides an affirmative defense against insider trading claims if the plan meets requisite conditions. The Form 4 supplies weighted average prices and price ranges for the sales, and discloses post-transaction beneficial ownership including unvested RSUs. From a governance perspective, use of a 10b5-1 plan is a standard control mechanism; the filing shows required transparency by identifying the plan and providing detailed sale metrics. No corporate governance irregularities are evident from this filing alone.

Securities/Equity Analyst

TL;DR: Insider sold 38,284 shares in two tranches on 08/25/2025; transactions disclosed with price ranges and weighted averages.

The Form 4 reports two separate sale entries totaling 38,284 shares disposed at weighted average prices of $27.92 and $28.47. The filing clarifies the range of execution prices for each tranche and commits to provide per-price breakdowns on request. Post-sale beneficial ownership is reported as 299,211 and 273,118 shares respectively, and includes unvested restricted stock units. These details allow analysts to quantify immediate insider liquidity but do not, by themselves, indicate company performance or future guidance.

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)
08/25/2025

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	08/25/2025		S		12,191(1)(2)	D	$27.92	299,211(3)	D
Common Stock	08/25/2025		S		26,093(1)(4)	D	$28.47	273,118(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. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 03/14/2025.

2. The reported transaction involves sale transactions from $27.26 to $28.26 per share. The weighted average price per share was $27.92. 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. The reported transaction involves sale transactions from $28.27 to $28.74 per share. The weighted average price per share was $28.47. 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	08/27/2025
	** 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) insider Joseph John Corso sell on 08/25/2025?

He sold a total of 38,284 shares in two sale groupings (12,191 shares and 26,093 shares) executed on 08/25/2025.

At what prices were the LASR shares sold by the CFO?

Weighted average prices were $27.92 and $28.47; reported execution price ranges were $27.26–$28.26 and $28.27–$28.74 respectively.

Were the sales part of a pre-arranged trading plan?

Yes. The Form 4 states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted on 03/14/2025.

How many LASR shares did the reporting person own after these transactions?

Beneficial ownership is reported as 299,211 shares after the first reported sale line and 273,118 shares after the second reported sale line; holdings include common stock and unvested restricted stock units.

Who signed the Form 4 filing for the reporting person?

The form was signed by Julie Dimmick as attorney-in-fact on 08/27/2025.