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Corso Joseph John

Disclosed activity across 1 company

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41067
SEC CIK
0001914846

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
NLIGHT, INC.LASR · Entity 4397Chief Financial OfficerSeptember 03, 2026September 08, 2026

Disclosed balances

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Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

NLIGHT, INC.

Report date September 03, 2026 · Filed September 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect162,200 Last balance in matching sequence After 2026-09-04 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2026-09-03 · Sale · Disposed 4,191 · Balance 165,724

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.

F2: The reported transaction involves sale transactions from $40.69 to $40.69 per share. The weighted average price per share was $40.69. 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.

F3: Includes common stock owned and unvested restricted stock units.

Row 2 · 2026-09-04 · Sale · Disposed 3,524 · Balance 162,200

F4: This reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5: The reported transaction involves sale transactions from $41.49 to $41.49 per share. The weighted average price per share was $41.49. 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.

F3: Includes common stock owned and unvested restricted stock units.

Filing footnotes · ownership attribution and instrument terms

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.

F2: The reported transaction involves sale transactions from $40.69 to $40.69 per share. The weighted average price per share was $40.69. 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.

F3: Includes common stock owned and unvested restricted stock units.

F4: This reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5: The reported transaction involves sale transactions from $41.49 to $41.49 per share. The weighted average price per share was $41.49. 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 04, 2026 Filed Sep 8, 2026 21:59 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 3,524 $41.49 $146,210.76
Disclosure

SEC source: 0001628280-26-060960 · wk-form4_1788904780.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 162,200

F4 · shares: This reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5 · price: The reported transaction involves sale transactions from $41.49 to $41.49 per share. The weighted average price per share was $41.49. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
September 03, 2026 Filed Sep 8, 2026 21:59 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,191 $40.69 $170,531.79
Disclosure

SEC source: 0001628280-26-060960 · wk-form4_1788904780.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 165,724

F1 · shares: 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.

F2 · price: The reported transaction involves sale transactions from $40.69 to $40.69 per share. The weighted average price per share was $40.69. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
June 04, 2026 Filed Jun 5, 2026 22:36 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 3,817 $72.90 $278,259.30
Disclosure

SEC source: 0001628280-26-041341 · wk-form4_1780698991.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 169,915

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
June 03, 2026 Filed Jun 5, 2026 22:36 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 3,840 $77.99 $299,481.60
Disclosure

SEC source: 0001628280-26-041341 · wk-form4_1780698991.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 173,732

F1 · shares: 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.

F2 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 20, 2026 Filed May 22, 2026 00:29 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 1,537 $71.36 $109,680.32
Disclosure

SEC source: 0001628280-26-037494 · wk-form4_1779409753.xml · nonDerivative · entry 5

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 177,572

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F8 · price: The reported transaction involves sale transactions from $71.31 to $71.58 per share. The weighted average price per share was $71.36. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 20, 2026 Filed May 22, 2026 00:29 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 19,090 $70.77 $1,350,999.30
Disclosure

SEC source: 0001628280-26-037494 · wk-form4_1779409753.xml · nonDerivative · entry 4

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 179,109

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F7 · price: The reported transaction involves sale transactions from $70.31 to $71.30 per share. The weighted average price per share was $70.77. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 20, 2026 Filed May 22, 2026 00:29 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 12,946 $69.98 $905,961.08
Disclosure

SEC source: 0001628280-26-037494 · wk-form4_1779409753.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 198,199

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F6 · price: The reported transaction involves sale transactions from $69.31 to $70.31 per share. The weighted average price per share was $69.98. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 20, 2026 Filed May 22, 2026 00:29 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 1,903 $68.81 $130,945.43
Disclosure

SEC source: 0001628280-26-037494 · wk-form4_1779409753.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 211,145

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5 · price: The reported transaction involves sale transactions from $68.31 to $69.29 per share. The weighted average price per share was $68.81. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 19, 2026 Filed May 22, 2026 00:29 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 20,243 $68.48 $1,386,240.64
Disclosure

SEC source: 0001628280-26-037494 · wk-form4_1779409753.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 213,048

F1 · shares: 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.

F2 · price: The reported transaction involves sale transactions from $68.48 to $68.48 per share. The weighted average price per share was $68.48. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 18, 2026 Filed May 20, 2026 00:02 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 19,575 $70.82 $1,386,301.50
Disclosure

SEC source: 0001628280-26-036681 · wk-form4_1779235374.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 233,291

F1 · shares: 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.

F4 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

F5 · balance_after: 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.

Read SEC document
May 15, 2026 Filed May 20, 2026 00:02 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 18,445 $75.16 $1,386,326.20
Disclosure

SEC source: 0001628280-26-036681 · wk-form4_1779235374.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 252,451

F1 · shares: 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.

F2 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 05, 2026 Filed May 7, 2026 23:41 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 100,000 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-032475 · wk-form4_1778197302.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,896

F1 · shares: Represents an equal number of restricted stock units ("RSUs"). Each RSU represents the right to receive a share of the Issuer's common stock on the date it vests. These RSUs were granted subject to performance- and service-based vesting requirements. On May 5, 2026, the Compensation Committee of the Issuer's Board of Directors certified the level of achievement of the performance-based conditions. As a result, one hundred percent (100%) of the RSUs will vest on May 14, 2026, subject to continued service with the Issuer through such date.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
March 06, 2026 Filed Mar 10, 2026 00:23 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 12,290 $60.39 $742,193.10
Disclosure

SEC source: 0001628280-26-016190 · wk-form4_1773102191.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 170,896

F4 · shares: These reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F5 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
March 05, 2026 Filed Mar 10, 2026 00:23 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 13,038 $61.96 $807,834.48
Disclosure

SEC source: 0001628280-26-016190 · wk-form4_1773102191.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 183,186

F1 · shares: 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.

F2 · price: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 15, 2025 Filed Dec 18, 2025 01:09 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 2,075 $36.86 $76,484.50
Disclosure

SEC source: 0001124796-25-000167 · wk-form4_1766020176.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 196,224

F1 · shares: This reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F4 · price: The reported transaction involves sale transactions from $36.77 to $37.15 per share. The weighted average price per share was $36.86. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 15, 2025 Filed Dec 18, 2025 01:09 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 64,000 $36.30 $2,323,200.00
Disclosure

SEC source: 0001124796-25-000167 · wk-form4_1766020176.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 198,299

F1 · shares: This reported sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

F2 · price: The reported transaction involves sale transactions from $35.77 to $36.76 per share. The weighted average price per share was $36.30. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 03, 2025 Filed Dec 6, 2025 00:13 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,127 $33.78 $139,410.06
Disclosure

SEC source: 0001124796-25-000163 · wk-form4_1764979990.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,299

F1 · shares: 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.

F2 · price: The reported transaction involves sale transactions from $33.78 to $33.78 per share. The weighted average price per share was $33.78. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

F4 · balance_after: Amount includes shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of May 16, 2025 through Nov 15, 2025. 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 May 16th, 2025.

Read SEC document
September 05, 2025 Filed Sep 9, 2025 00:15 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 3,588 $29.73 $106,671.24
Disclosure

SEC source: 0001124796-25-000143 · wk-form4_1757376914.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 265,418

F3 · shares: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 14, 2025.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
September 04, 2025 Filed Sep 9, 2025 00:15 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,112 $29.14 $119,823.68
Disclosure

SEC source: 0001124796-25-000143 · wk-form4_1757376914.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 269,006

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 25, 2025 Filed Aug 27, 2025 23:58 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 26,093 $28.47 $742,867.71
Disclosure

SEC source: 0001124796-25-000135 · wk-form4_1756339090.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 273,118

F1 · shares: 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.

F4 · shares: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 25, 2025 Filed Aug 27, 2025 23:58 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 12,191 $27.92 $340,372.72
Disclosure

SEC source: 0001124796-25-000135 · wk-form4_1756339090.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 299,211

F1 · shares: 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.

F2 · shares: 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 22, 2025 Filed Aug 22, 2025 23:58 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 8,007 $28.33 $226,838.31
Disclosure

SEC source: 0001914846-25-000005 · wk-form4_1755907100.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 311,402

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 21, 2025 Filed Aug 22, 2025 23:58 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 8,619 $26.49 $228,317.31
Disclosure

SEC source: 0001914846-25-000005 · wk-form4_1755907100.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 319,409

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 20, 2025 Filed Aug 22, 2025 23:58 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 8,894 $25.67 $228,308.98
Disclosure

SEC source: 0001914846-25-000005 · wk-form4_1755907100.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 328,028

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 19, 2025 Filed Aug 21, 2025 00:24 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 8,449 $26.28 $222,039.72
Disclosure

SEC source: 0001914846-25-000003 · wk-form4_1755735891.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 336,922

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
August 18, 2025 Filed Aug 21, 2025 00:24 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 5,991 $26.69 $159,899.79
Disclosure

SEC source: 0001914846-25-000003 · wk-form4_1755735891.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 345,371

F1 · shares: 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

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August 13, 2025 Filed Aug 15, 2025 15:24 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 100,000 $0.00 $0.00
Disclosure

SEC source: 0001124796-25-000129 · wk-form4_1755271490.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 351,362

F1 · shares: Represents performance-based restricted stock units ("PRSUs") awarded under the Issuer's 2018 Equity Incentive Plan. Each PRSU represents a contingent right to receive one share of the Issuer's common stock. The PRSUs vest in accordance with performance-based and service-based conditions.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

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August 05, 2025 Filed Aug 8, 2025 00:14 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 85,000 $0.00 $0.00
Disclosure

SEC source: 0001124796-25-000116 · wk-form4_1754612037.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,362

F1 · shares: Represents an equal number of restricted stock units ("RSUs"). Each RSU represents the right to receive a share of the Issuer's common stock on the date it vests. These RSUs were granted subject to performance- and service-based vesting requirements. On August 5, 2025, the Compensation Committee of the Issuer's Board of Directors certified the level of achievement of the performance-based conditions. As a result, one hundred percent (100%) of the RSUs will vest on August 14, 2025, subject to continued service with the Issuer through such date.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

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June 13, 2025 Filed Jun 18, 2025 00:23 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 10,062 $17.62 $177,292.44
Disclosure

SEC source: 0001124796-25-000103 · wk-form4_1750206193.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 166,362

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 03/04/2025.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

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June 02, 2025 Filed Jun 5, 2025 01:00 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 6,705 $15.59 $104,530.95
Disclosure

SEC source: 0001124796-25-000077 · wk-form4_1749085226.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 176,424

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

F3 · balance_after: Includes shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of Nov 16, 2024 through May 15, 2025. 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 18, 2024.

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May 22, 2025 Filed May 28, 2025 01:09 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001124796-25-000059 · wk-form4_1748394588.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,956

F1 · shares: Acquisition represents grant of restricted stock units for no cash consideration. One-third (33.33%) of the RSUs shall vest on March 1, 2026, and one-twelfth (8.33%) shall vest each quarter over the subsequent two years, subject to continued service with the Company through each such vesting date.

F2 · balance_after: Includes common stock owned and unvested restricted stock units

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March 04, 2025 Filed Mar 6, 2025 01:23 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,182 $8.18 $34,208.76
Disclosure

SEC source: 0001124796-25-000026 · wk-form4_1741224193.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 131,956

F3 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 12/15/2023.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
March 03, 2025 Filed Mar 6, 2025 01:23 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 2,500 $9.24 $23,100.00
Disclosure

SEC source: 0001124796-25-000026 · wk-form4_1741224193.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 136,138

F3 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 12/15/2023.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
March 03, 2025 Filed Mar 6, 2025 01:23 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 10,506 $8.30 $87,199.80
Disclosure

SEC source: 0001124796-25-000026 · wk-form4_1741224193.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 138,638

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 03, 2024 Filed Dec 5, 2024 01:28 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,022 $10.84 $43,598.48
Disclosure

SEC source: 0001124796-24-000137 · wk-form4_1733362086.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 149,144

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2023

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 02, 2024 Filed Dec 5, 2024 01:28 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 1,963 $11.06 $21,710.78
Disclosure

SEC source: 0001124796-24-000137 · wk-form4_1733362086.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 153,166

F4 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 02, 2024 Filed Dec 5, 2024 01:28 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 2,500 $10.92 $27,300.00
Disclosure

SEC source: 0001124796-24-000137 · wk-form4_1733362086.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 155,129

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2023

F2 · balance_after: Includes 1,110 shares purchased pursuant to the nLight, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of May 16, 2024 through November 15, 2024. 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 15, 2024.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
September 04, 2024 Filed Sep 5, 2024 20:42 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 14,915 $11.14 $166,153.10
Disclosure

SEC source: 0001124796-24-000109 · wk-form4_1725568930.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 156,519

F4 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. This transaction involves sale transactions from $10.96 to $11.25 per share. The weighted average price per share was $11.14. 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.

Read SEC document
September 03, 2024 Filed Sep 5, 2024 20:42 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 4,461 $11.44 $51,033.84
Disclosure

SEC source: 0001124796-24-000109 · wk-form4_1725568930.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 171,434

F3 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. This transaction involves sale transactions from $11.04 to $11.82 per share. The weighted average price per share was $11.44. 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.

Read SEC document
September 03, 2024 Filed Sep 5, 2024 20:42 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 7,237 $11.11 $80,403.07
Disclosure

SEC source: 0001124796-24-000109 · wk-form4_1725568930.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 175,895

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units. Applicable to all amounts in column 5.

Read SEC document
August 19, 2024 Filed Aug 21, 2024 19:59 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 933 $11.72 $10,934.76
Disclosure

SEC source: 0001124796-24-000103 · wk-form4_1724270375.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 183,132

F1 · shares: Shares withheld to cover tax liability in connection with the time-based vesting of PRSUs, the acquisition of which was previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
June 04, 2024 Filed Jun 6, 2024 01:09 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 7,513 $12.09 $90,832.17
Disclosure

SEC source: 0001124796-24-000077 · wk-form4_1717636147.xml · nonDerivative · entry 3

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 184,065

F3 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person

F4 · price: The reported transaction involves sale transactions from $11.99 to $12.44 per share. The weighted average price per share was $12.09. 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
June 03, 2024 Filed Jun 6, 2024 01:09 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 2,500 $13.29 $33,225.00
Disclosure

SEC source: 0001124796-24-000077 · wk-form4_1717636147.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 191,578

F3 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
June 03, 2024 Filed Jun 6, 2024 01:09 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 3,643 $12.65 $46,083.95
Disclosure

SEC source: 0001124796-24-000077 · wk-form4_1717636147.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 194,078

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
May 15, 2024 Filed May 17, 2024 21:55 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 1,120 $9.28 $10,395.84
Disclosure

SEC source: 0001124796-24-000064 · wk-form4_1715982911.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 197,721

F1 · shares: Shares purchased pursuant to the nLIGHT, Inc. Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of November 16, 2023 through May 15, 2024. 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 16, 2023

Read SEC document
April 08, 2024 Filed Apr 10, 2024 21:05 UTC NLIGHT, INC. LASR · Entity 4397 GrantCommon Stock 50,000 $0.00 $0.00
Disclosure

SEC source: 0001124796-24-000039 · wk-form4_1712783113.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 196,601

F1 · shares: Acquisition represents grant of restricted stock units for no cash consideration. One-third (33.33%) of the RSUs shall vest on March 1, 2025 , and one-twelfth (8.33%) shall vest each quarter over the subsequent two years, subject to continued service with the Company through each such vesting date.

F2 · balance_after: Includes common stock owned and unvested restricted stock units

Read SEC document
March 18, 2024 Filed Mar 20, 2024 20:55 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 14,105 $12.26 $172,927.30
Disclosure

SEC source: 0001124796-24-000033 · wk-form4_1710968115.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 146,601

F1 · shares: The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on December 15, 2023.

F2 · price: The reported transaction involves sale transactions from $12.18 to $12.42 per share. The weighted average price per share was $12.26. 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.

F3 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:11 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 6,128 $13.04 $79,909.12
Disclosure

SEC source: 0001124796-24-000027 · wk-form4_1709673054.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,706

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 01, 2023 Filed Dec 5, 2023 21:04 UTC NLIGHT, INC. LASR · Entity 4397 SaleCommon Stock 26,242 $13.24 $347,444.08
Disclosure

SEC source: 0001124796-23-000116 · wk-form4_1701810228.xml · nonDerivative · entry 2

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,834

F3 · shares: The reported transaction involves sale transactions from $12.95 to $13.46 per share. The weighted average price per share was $13.24. 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.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document
December 01, 2023 Filed Dec 5, 2023 21:04 UTC NLIGHT, INC. LASR · Entity 4397 Tax withholdingCommon Stock 884 $13.43 $11,872.12
Disclosure

SEC source: 0001124796-23-000116 · wk-form4_1701810228.xml · nonDerivative · entry 1

Corso Joseph John · CIK 0001914846 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,076

F1 · shares: Shares withheld to cover tax liability in connection with the vesting of restricted stock units previously reported. These shares were not issued to or sold by the reporting person.

F2 · balance_after: Includes common stock owned and unvested restricted stock units.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.