STOCK TITAN

nLIGHT (LASR) CFO discloses mandatory RSU tax sell-to-cover sales

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

nLIGHT, Inc.’s Chief Financial Officer Joseph John Corso reported two sales of common stock that were executed to cover tax withholding on vested restricted stock units. On May 15, 2026, he sold 18,445 shares at a weighted average price of $75.16 per share. On May 18, 2026, he sold 19,575 shares at a weighted average price of $70.82 per share.

The company’s election to require a mandatory “sell to cover” mechanism means these transactions were not discretionary trades. After these sales, Corso directly holds 233,291 shares of nLIGHT common stock, a figure that includes both owned shares and unvested restricted stock units and reflects shares acquired under the company’s Employee Stock Purchase Plan.

Positive

  • None.

Negative

  • None.
Insider Corso Joseph John
Role Chief Financial Officer
Sold 38,020 shs ($2.77M)
Type Security Shares Price Value
Sale Common Stock 19,575 $70.82 $1.39M
Sale Common Stock 18,445 $75.16 $1.39M
Holdings After Transaction: Common Stock — 233,291 shares (Direct, null)
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 $75.16 to $75.16 per share. The weighted average price per share was $75.16. 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. The reported transaction involves sale transactions from $70.82 to $70.82 per share. The weighted average price per share was $70.82. 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. Amount includes shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2025 through May 15, 2026. In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of the issuer's common stock on November 17th, 2025.
Shares sold 15 May 2026 18,445 shares at $75.16 Open-market sale to cover RSU tax withholding
Shares sold 18 May 2026 19,575 shares at $70.82 Open-market sale to cover RSU tax withholding
Total shares sold 38,020 shares Combined sell-to-cover transactions in May 2026
Post-transaction holdings 233,291 shares Common stock and unvested RSUs held directly after sales
ESPP purchase discount 85% of closing price Price basis for ESPP shares on November 17, 2025
restricted stock units financial
"tax withholding obligations in connection with the vesting and settlement of restricted stock units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
sell to cover financial
"funded by a "sell to cover" transaction and does not represent a discretionary transaction"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
weighted average price financial
"The weighted average price per share was $75.16."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Employee Stock Purchase Plan financial
"shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP")"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
open-market sale financial
"transaction_code_description": "Sale in open market or private transaction""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
SEC Form 4
FORM 4UNITED 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).
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 WASHINGTON 98607

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
NLIGHT, INC. [ LASR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock05/15/2026S18,445(1)D$75.16(2)252,451(3)D
Common Stock05/18/2026S19,575(1)D$70.82(4)233,291(3)(5)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 $75.16 to $75.16 per share. The weighted average price per share was $75.16. 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 $70.82 to $70.82 per share. The weighted average price per share was $70.82. 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.
5. Amount includes shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2025 through May 15, 2026. In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of the issuer's common stock on November 17th, 2025.
Remarks:
/s/ Julie Dimmick, as attorney-in-fact05/19/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider activity did nLIGHT (LASR) disclose in this Form 4?

nLIGHT (LASR) disclosed that its CFO, Joseph John Corso, sold shares to cover tax withholding tied to restricted stock unit vesting. The transactions were mandated “sell to cover” sales rather than discretionary open-market trades.

How many nLIGHT (LASR) shares did the CFO sell and at what prices?

The CFO sold 18,445 nLIGHT (LASR) shares at a weighted average price of $75.16 and 19,575 shares at a weighted average price of $70.82. Both transactions involved common stock and were reported as open-market sales.

Why were the nLIGHT (LASR) CFO’s share sales characterized as sell-to-cover?

The sales were executed to fund tax withholding obligations arising from restricted stock unit vesting. nLIGHT elected to satisfy these obligations through mandated “sell to cover” transactions, so the CFO did not choose the sales as discretionary portfolio decisions.

How many nLIGHT (LASR) shares does the CFO hold after these transactions?

After the reported sell-to-cover transactions, the CFO holds 233,291 nLIGHT (LASR) shares directly. This total includes both common stock he owns and unvested restricted stock units that remain subject to vesting conditions.

Do these nLIGHT (LASR) insider sales involve any derivative securities or options?

The reported nLIGHT (LASR) transactions involve only common stock, with no derivative exercises or option conversions disclosed. The derivative summary is empty, indicating no remaining derivative positions are shown in this particular Form 4.

What role did the Employee Stock Purchase Plan play in the CFO’s LASR holdings?

The CFO’s reported holdings include shares purchased under nLIGHT’s Employee Stock Purchase Plan for the November 16, 2025 to May 15, 2026 period. These ESPP shares were bought at 85% of the closing stock price on November 17, 2025.