Nicholas Marco Miller - 22 May 2026 Form 4 Insider Report for Nextpower Inc. (NXT)

Reporting relationship: Chief Operating Officer
Issuer ticker: NXT
Reported as of: 22 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 May 2026, 20:06:31 UTC
Prior SEC filing: 22 May 2026
Next SEC filing: 01 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Philip Reuther, as attorney-in-fact for Nicholas Marco Miller

Key filing fact

Nicholas Marco Miller filed Form 4 for Nextpower Inc. (NXT) on 27 May 2026.

Key facts

This page summarizes Nicholas Marco Miller's Form 4 filing for Nextpower Inc. (NXT).
9 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 27 May 2026, 20:06.

Change

Previous filing in this sequence was filed on 22 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001962163 Primary reporting owner

Miller Nicholas Marco

Relationship: Chief Operating Officer
Address: C/O NEXTPOWER INC., 6200 PASEO PADRE PARKWAY, FREMONT
Signature: /s/ Philip Reuther, as attorney-in-fact for Nicholas Marco Miller
Signature date: 27 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NXT transaction

Common Stock

Options Exercise

Transaction value
Shares: +63,470
Change %: +30%
Price: $21.00^*
Shares after: 278,506
Date: 22 May 2026
Ownership: Direct
Footnotes: F1

NXT transaction

Common Stock

Other

Transaction value
Shares: -12,842
Change %: -4.6%
Price: $129.04^*
Shares after: 265,664
Date: 26 May 2026
Ownership: Direct
Footnotes: F2, F3

NXT transaction

Common Stock

Other

Transaction value
Shares: -21,760
Change %: -8.2%
Price: $129.84^*
Shares after: 243,904
Date: 26 May 2026
Ownership: Direct
Footnotes: F2, F4

NXT transaction

Common Stock

Other

Transaction value
Shares: -24,547
Change %: -10%
Price: $130.94^*
Shares after: 219,357
Date: 26 May 2026
Ownership: Direct
Footnotes: F2, F5

NXT transaction

Common Stock

Other

Transaction value
Shares: -3,700
Change %: -1.7%
Price: $131.76^*
Shares after: 215,657
Date: 26 May 2026
Ownership: Direct
Footnotes: F2, F6

NXT transaction

Common Stock

Other

Transaction value
Shares: -422
Change %: -0.2%
Price: $132.60^*
Shares after: 215,235
Date: 26 May 2026
Ownership: Direct
Footnotes: F2, F7

NXT transaction

Common Stock

Other

Transaction value
Shares: -199
Change %: -0.09%
Price: $134.89^*
Shares after: 215,036
Date: 26 May 2026
Ownership: Direct
Footnotes: F2

NXT transaction

Common Stock

Other

Transaction value
Shares: -6,415
Change %: -3%
Price: $129.38^*
Shares after: 208,621
Date: 26 May 2026
Ownership: Direct
Footnotes: F8

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NXT transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -63,470
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 22 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 63,470
Exercise price: $21.00
Footnotes: F1, F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 9 footnotes

Footnote F1

Reflects an award of performance-based options ("Performance Options") to purchase shares of the Issuer's common stock ("Common Stock") that vested and became exercisable as of April 1, 2026 upon the achievement of both a continuous service requirement and the achievement of certain Nextpower equity valuation growth conditions. These Performance Options contain unique restrictions which (i) provide a limited period of time following vesting to exercise such Performance Options (i.e., by no later than March 15, 2027) or otherwise such Performance Options terminate and (ii) cap the maximum "gain" value realizable by Mr. Miller upon exercise of the total award of Performance Options at 250% of the aggregate exercise price (the "Max Benefit Limit").

Footnote F2

The sale reported in this Form 4 was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on December 12, 2025. A portion of this sale includes the sale of shares of Common Stock required to be sold in order to satisfy the exercise price and tax withholding obligations in connection with the exercise of the Performance Options.

Footnote F3

The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions at prices ranging from $128.35 to $129.34, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission (SEC), upon request, full information regarding the number of shares sold at each separate price within such ranges.

Footnote F4

The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions at prices ranging from $129.35 to $130.345, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission (SEC), upon request, full information regarding the number of shares sold at each separate price within such ranges.

Footnote F5

The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions at prices ranging from $130.35 to $131.345, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission (SEC), upon request, full information regarding the number of shares sold at each separate price within such ranges.

Footnote F6

The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions at prices ranging from $131.35 to $132.31, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission (SEC), upon request, full information regarding the number of shares sold at each separate price within such ranges.

Footnote F7

The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions at prices ranging from $132.35 to $133.82, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission (SEC), upon request, full information regarding the number of shares sold at each separate price within such ranges.

Footnote F8

Reflects the number of shares required to be sold pursuant to a "sell-to-cover" transaction in order to satisfy the tax withholding obligations in connection with the vesting and conversion of RSUs. These sales are mandated by the Issuer's "sell-to-cover" policy adopted by the Issuer on March 2, 2023 pursuant to the requirements of Rule 10b5-1 and its authority under its equity incentive plan, and do not represent discretionary trades by the Reporting Person.

Footnote F9

As a result of the application of the Max Benefit Limit, 68,911 Performance Options were forfeited and cancelled without any consideration.