Conversion Notice. Promptly after the Conversion Date, the Corporation shall send a written notice to each Holder of shares of Series A Preferred Stock (the “Conversion Notice”). The Conversion Notice shall include a calculation of the criteria on which the Conversion is deemed to have occurred and a calculation of the Fully Diluted Common Shares on the Conversion Date. The Conversion Notice shall be accompanied by a Notice of Book Entry attesting to the recordation of shares of Common Stock in the name of the Holder as of the Conversion Date. If certificates for the Series A Preferred Stock have been issued, then upon receipt of the Conversion Notice the Holder shall surrender the certificate for the Series A Preferred Stock to the Corporation at its principal office.

Conversion Notice. At least seven (7) calendar days prior to the consummation of a Liquidity Event [[Organization A:Organization]] will provide the Holder with written notice, which includes notice via email, of the Liquidity Event (the “Liquidity Event Notice”). After receipt of the Liquidity Event Notice, but prior to the consummation of the Liquidity Event, Holder may exercise its right to convert any portion of this Note into Conversion Shares by delivering to [[Organization A:Organization]] # written notice of its election to convert this Note pursuant to [Section 4], including the amount if this Note to be Converted and # in the case of a Conversion of this Note in whole, or in part, this Note (or a notice to the effect that the original Note has been lost, stolen or destroyed and an agreement acceptable to [[Organization A:Organization]] whereby the holder agrees to indemnify [[Organization A:Organization]] from any loss incurred by it in connection with this Note). Upon Conversion, Holder agrees to execute and deliver to [[Organization A:Organization]] any Lock-Up / Leak-Out agreements required by the underwriter for all investors in connection with the Liquidity Event. If for any reason the Liquidity Event does not occur within 7 calendar days of the date specified in the Liquidity Event Notice, Holder may withdraw its conversion election by written notice to [[Organization A:Organization]].

Conversion Notice. NEE Partners shall promptly notify the Partnership upon receipt of written notice from a NEE Partners Series A Converting Unitholder stating that such converting unitholder elects to convert its NEE Partners Series A Preferred Units pursuant to the NEE Partners Partnership Agreement (a “NEE Partners Series A Conversion Notice”). NEE Partners shall simultaneously notify the Partnership if NEE Partners gives notice to a NEE Partners Series A Preferred Unitholder of NEE Partners’ election to force conversion of NEE Partners Series A Preferred Units (a “NEE Partners Series A Forced Conversion Notice”).

To convert Series A Preferred Units into Common Units pursuant to Section 5.8(b)(vi)(A), a Series A Converting Unitholder shall give written notice (a “Series A Conversion Notice”) to the Partnership stating that such Series A Preferred Unitholder elects to so convert Series A Preferred Units pursuant to Section 5.8(b)(vi)(A), the number of Series A Preferred Units to be converted. The Series A Conversion Units shall be issued in the name of the Record Holder of such Series A Preferred Units. A Series A Converting Unitholder who is a Series A Purchase Agreement Purchaser (or an Affiliate thereof) may only provide a Series A Conversion Notice through the BlackRock Purchaser as and to the extent provided in Section 5.8(b)(vi)(A), and the BlackRock Purchaser may not transfer any of the rights or obligations to give or receive notices under this Section (on behalf of itself and/or any Series A Purchase Agreement Purchaser or any of its or their Affiliates) without the express written consent of the Partnership. Following such time as the BlackRock Purchaser ceases to own Series A Preferred Units, the BlackRock Purchaser may continue to give or receive notices pursuant to the foregoing on behalf of any other Series A Purchase Agreement Purchaser or any of its Affiliates who are required to provide notice through the BlackRock Purchaser under this Section. A Series A Conversion Notice shall be considered given under this Section when such notice is actually received by the Partnership at both of the following physical addresses (or such other address or addresses as the Partnership may designate in writing to the BlackRock Purchaser from time to time):

Notice of Conversion. In order for a Holder of Series E Preferred Stock to convert shares of Series E Preferred Stock into shares of Common Stock, such Holder shall # provide written notice to the Corporation that such Holder elects to convert all or any number of such Holder’s shares of Series E Preferred Stock on the form of conversion notice attached hereto as Annex A (a “Notice of Conversion”), duly completed and executed. The Notice of Conversion shall state the Holder’s name or the names of the nominees in which the Holder wishes the shares of Common Stock to be issued. The calculations set forth in the Notice of Conversion shall control in the absence of manifest or mathematical error. The “Conversion Date” with respect to any conversion of Series E Preferred Stock hereunder (or the date on which any such conversion shall be deemed effective), shall be the date on which the Notice of Conversion with respect to such conversion is delivered to the Corporation. The shares of Common Stock issuable upon conversion of the specified shares of Series E Preferred Stock in a Notice of Conversion shall be deemed to be outstanding of record as of the Conversion Date with respect to such Notice of Conversion. Not later than two (2) Trading Days following the Conversion Date with respect to any conversion of Series E Preferred Stock hereunder (the “Share Delivery Date”), the Corporation shall cause the shares of Common Stock issuable upon conversion of the shares of Series E Preferred Stock specified in the applicable Notice of Conversion to be transmitted by the Corporation’s transfer agent to the Holder or its nominee’s balance account with The Depository Trust Company through its Deposit Withdrawal Agent Commission System, provided that at least one of the following two conditions is met as of the Conversion Date: # there is an effective registration statement permitting the issuance of the shares of Common Stock issuable upon conversion of the shares of Series E Preferred Stock specified in the Notice of Conversion or the resale of such shares of Common Stock by the Holder and # the shares of Common Stock issuable upon conversion of the shares of Series E Preferred Stock specified in the Notice of Conversion are eligible for resale by the Holder pursuant to Rule 144 promulgated under the Securities Act of 1933, as amended (the “DWAC Delivery Conditions”); provided, that solely in the case that neither of the DWAC Delivery Conditions is met as of the Conversion Date, the Corporation shall cause the shares of Common Stock issuable upon conversion of the shares of Series E Preferred Stock specified in the Notice of Conversion to be transmitted by no later than the Share Delivery Date by the Corporation’s transfer agent to the account of the Holder or its nominee by book entry transfer, and shall cause the Transfer Agent to deliver to the Holder evidence of such book entry transfer by no later than the Share Delivery Date. In addition, upon delivery of any Notice of Conversion to the Corporation by a Holder, by no later than the Share Delivery Date, the Corporation shall # pay in cash to the Holder such amount as provided in [Subsection 5.2] in lieu of any fraction of a share of Common Stock otherwise issuable upon such conversion and # pay all declared but unpaid dividends on the shares of Series E Preferred Stock so converted. If the Corporation fails for any reason to cause delivery to the Holder or its nominee of the shares of Common Stock issuable upon a conversion of Series E Preferred Stock in accordance with this Section 5.3.1 on or prior to the applicable Share Delivery Date, the Corporation shall pay to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of shares of Common Stock issuable pursuant to such conversion (based on the number of shares of Common Stock issuable pursuant to such conversion and the VWAP of the Common Stock on the applicable Conversion Date), $5 per Trading Day (increasing to $10 per Trading Day on the fifth Trading Day after such liquidated damages begin to accrue) for each Trading Day after such Share Delivery Date until such shares of Common Stock are delivered or the Holder rescinds such conversion.

Rescindment of Conversion Notice. If: # the Company fails to respond to Holder within one business day from the date of delivery of a Conversion Notice confirming the details of the Conversion, (li) the Company fails to provide the Shares requested in the Conversion Notice within three business days from the date of the delivery of the Conversion Notice, # the Holder is unable to procure a legal opinion required to have the Shares Issued unrestricted and/or deposited to seIl for any reason related to the Company's standing with the SEC or FINRA, or any action or inaction by the Company, # the Holder is unable to deposit the Shares requested in the Conversion Notice for any reason related to the Company's standing with the SEC or FINRA, or any action or inaction by the Company, # if the Holder is informed that the Company does not have the authorized and Issuable Shares available to satisfy the Conversion, or # if OTC Markets changes the Company's designation to 'Limited Information' (Yield), 'No Information' (Stop Sign), 'Caveat Emptor' (Skull and Crossbones), or 'OTC', 'Other OTC or 'Grey Market' (Exclamation Mark Sign) on the day of or any day after the date of the Conversion Notice, the Holder maintains the option and sole discretion to rescind the Conversion Notice ("Rescindment') by delivering a notice of rescindment to the Company in the same manner that a Conversion Notice is required to be delivered to the Company pursuant to the terms of this Note

CONVERSION RIGHTS. This Note shall be convertible at the option of the Holder into shares of Common Stock at any time on or prior to the Maturity Date or earlier repayment pursuant to Section 1.

Conversion Right. Subject to any limitation set forth in this Section 3(a), at any time or times on or after the Issuance Date up to and including the Maturity Date (or earlier repayment pursuant to Section 1), the Holder shall have the right to convert any portion of the outstanding Principal (such requested amount, the “Conversion Amount”) into validly issued, fully paid and non-assessable shares of Common Stock in accordance with Section 4, at the Conversion Price (as defined below). Following the Company’s delivery of a Change of Control Notice to the Holder, the Holder shall have the right to convert this Note pursuant to this Section 3(a) until the actual effective date of such Change of Control (any such conversion, a “Change of Control Conversion”), after which time the Holder’s right to convert this Note shall terminate. Such request shall be made in writing delivered to the Chief Financial Officer of the Company. Conversion shall be effective upon the date of such request if received or such later date as may be requested by the Holder, but in no event later than the Maturity Date (the “Conversion Date”). The Company shall not issue any fraction of a share of Common Stock upon any such conversion. If the issuance would result in the issuance of a fraction of a share of Common Stock, the Company shall round such fraction down to the nearest whole share. The Company shall pay any and all transfer, stamp, issuance and similar taxes that may be payable with respect to the issuance and delivery of Common Stock upon conversion, provided, however, that in no event shall the Company be required to pay any such taxes that may be payable in respect of the issuance and delivery of Common Stock in a name other than that of the Holder, and the Company shall not be required to issue or deliver any such Common Stock unless and until the person or persons requesting the issue thereof shall have paid to the Company the amount of such taxes or shall have established to the satisfaction of the Company that such taxes have been paid or are not payable.

Conversion Formula. The number of shares of Common Stock issuable upon conversion of any Conversion Amount pursuant to Section 3(a) (the “Conversion Shares”) shall be determined by dividing such Conversion Amount by the Conversion Price. For purposes hereof, “Conversion Price” means ​, which was the market closing price of the Common Stock on Friday, May 26, 2023 on the Nasdaq Capital Market.

Conversion Ratio. Each share of Series D Preferred Stock shall be convertible, at the option of the Holder thereof, at any time and from time to time, and without the payment of additional consideration by the Holder thereof, into such number of fully paid and non-assessable shares of Common Stock equal to the ratio determined by dividing # the Stated Value of such share of Series D Preferred Stock by # the Series D Conversion Price (as defined below) in effect at the time of conversion (the “Conversion Ratio”). The “Series D Conversion Price” shall initially be One Dollar and Eighty Cents ($1.80). The Series D Conversion Price shall be subject to adjustment as provided in [Sections 5.4 through 5.7] below, and for the avoidance of doubt, any adjustment to the Series D Conversion Price as provided in [Section 5.4 through 5.7] below shall result in a concordant adjustment to the number of shares of Common Stock into which each share of Series D Preferred Stock may be converted pursuant to the formula set forth in the first sentence of this Section 5.1.1 for determining the Conversion Ratio.

Conversion Limitations. The Corporation shall not effect any conversion of any shares of Series D Preferred Stock, and a Holder shall not have the right to effect any such conversion of any of his, her or its shares of Series D Preferred Stock, pursuant to Section 5 or otherwise, to the extent that after giving effect to such conversion, the Holder (together with the Holder’s Affiliates, and any other Persons acting as a group together with the Holder or any of the Holder’s Affiliates (such Persons “Attribution Parties”)), would beneficially own voting stock in excess of the Beneficial Ownership Limitation (as defined below). For purposes of this Section 5.3.7, the number of shares of Common Stock beneficially owned by the Holder and its Affiliates and Attribution Parties shall include the number of shares of Common Stock issuable upon any conversion with respect to which a Notice of Conversion has been given, but shall exclude the number of shares of Common Stock which would be issuable upon # conversion of the remaining, unconverted shares of Series D Preferred Stock beneficially owned by the Holder or any of its Affiliates or Attribution Parties and # exercise or conversion of the unexercised or nonconverted portion of any other derivative securities of the Corporation subject to a limitation on conversion or exercise analogous to the limitation contained herein beneficially owned by the Holder or any of its Affiliates or Attribution Parties. Except as set forth in the preceding sentence, beneficial ownership shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and the rules and regulations promulgated thereunder. To the extent that the limitation contained in this Section 5.3.7 applies, the determination of the number of shares of Series D Preferred Stock that are convertible shall be in the sole discretion of the Holder, and the submission of a Notice of Conversion shall be deemed to be the Holder’s determination as to the number of shares of Series D Preferred Stock that are convertible, in each case subject to the Beneficial Ownership Limitation, and the Corporation shall have no obligation to verify or confirm the accuracy of such determination. In addition, a determination as to any group status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. The “Beneficial Ownership Limitation” shall be 9.99% of the Cumulative Voting Power outstanding immediately after giving effect to the issuance of shares of Common Stock issuable upon the conversion specified in the Notice of Conversion. For purposes of this Section 5.3.7, the “Cumulative Voting Power” shall be the sum of the votes that may be cast at a meeting of the Corporation’s shareholders by the record holders of securities issued by the Corporation which by their terms provide the holder of such securities the right to cast votes on any proposal presented for vote of the shareholders. For purposes of this Section 5.3.7, in determining the Cumulative Voting Power, a Holder may rely on the information pertaining to the Cumulative Voting Power reflected in # the Corporation’s most recent periodic or annual report filed with the Securities and Exchange Commission, as the case may be, # a more recent public announcement by the Corporation or # a more recent written notice by the Corporation or its transfer agent setting forth the number of shares of Common Stock and/or the number of shares of other classes of stock with voting rights outstanding. Upon the written request of a Holder (which, for clarity, includes electronic mail), the Corporation shall within two Trading Days confirm orally and in writing to the Holder the number of shares of Common Stock and number of shares of other classes of voting stock then outstanding. In any case, the Cumulative Voting Power shall be determined after giving effect to the conversion or exercise of securities of the Corporation, including the Series D Preferred Stock, by the Holder or its Affiliates since the date as of which such number of outstanding shares of Common Stock or such number of outstanding shares of other classes of voting stock, as applicable, was reported. The Holder, upon not less than 61 days’ prior notice to the Corporation, may increase the percentage of Cumulative Voting Power that defines the Beneficial Ownership Limitation to 19.99%.

Conversion Price. The “Series E Conversion Price” shall initially be Two Dollars ($2.00). On the Measurement Date, the Series E Conversion Price shall be automatically adjusted to equal the average of the VWAPs for the five Trading Days immediately preceding the Measurement Date. The Series E Conversion Price shall be also subject to adjustment as provided in [Sections 5.4 through 5.7] below, and for the avoidance of doubt, any adjustment to the Series E Conversion Price as provided in this Section 5.1.2 or in [Section 5.4 through 5.7] below shall result in a concordant adjustment to the number of shares of Common Stock into which each share of Series E Preferred Stock may be converted pursuant to the formula set forth in Section 5.1.1 for determining the Conversion Ratio.

Conversion Awards. Awards may be granted under the Plan in substitution for similar awards held by individuals who become Eligible Persons as a result of a merger, consolidation or acquisition of another entity or the assets of another entity by or with the Company or an affiliate of the Company. Such Conversion Awards that are Options or Stock Appreciation Rights may have an exercise price that is less than the Fair Market Value of a share of Stock on the date of the substitution if such substitution complies with the Nonqualified Deferred Compensation Rules and other applicable laws and exchange rules.

Notice. Each written notice from the Borrower pursuant to [Section 2.15(a)] shall specify # whether it proposes an Incremental Revolving Increase, an Incremental Term Loan Facility or an Incremental Term Loan Increase, # if it proposes an Incremental Term Loan Facility, the proposed terms thereof and # if then known, the identity of each Lender and each Eligible Assignee that it proposes to approach to provide all or a portion of such Incremental Facility (subject in each case to any requisite consents required under [Section 11.06]); provided, however, that # no existing Lender shall be required to participate in any such Incremental Facility and the Borrower shall not be required to offer to any existing Lender the opportunity to participate in any such Incremental Facility and # any Eligible Assignee providing any portion of such Incremental Facility that is not an existing Lender shall become a Lender pursuant to a joinder agreement in form and substance reasonably satisfactory to the Administrative Agent and its counsel (a “New Lender Joinder Agreement”). At the time of sending such notice, the Borrower (in consultation with the Administrative Agent) shall specify the time period within which each applicable Lender approached to provide all or a portion of an Incremental Facility is requested to respond (which shall in no event be less than ten (10) Business Days from the date of delivery of such notice to the applicable [[Loan Parties:Organization]]). Each Lender approached to provide all or a portion of an Incremental Facility shall notify the Administrative Agent within such time period whether or not it agrees to participate in the requested Incremental Facility. Any Lender not responding within such time period shall be deemed to have declined to participate.

Notice. All notices, instructions and other communications given hereunder or in connection herewith shall be in writing. Any such notice, instruction or communication shall be sent either # by registered or certified mail, return receipt requested, postage prepaid, or # prepaid via a reputable nationwide overnight courier service, in each case addressed to the Company, Attention: CEO, at One Technology Park Drive, Westford, Massachusetts 01886 and to the Executive at the Executive’s principal residence as currently reflected on the Company’s records (or to such other address as either the Company or the Executive may have furnished to the other in writing in accordance herewith). Any such notice, instruction or communication shall be deemed to have been delivered five business days after it is sent by registered or certified mail, return receipt requested, postage prepaid, or one business day after it is sent via a reputable nationwide overnight courier service. Either party may give any notice, instruction or other communication hereunder using any other means, but no such notice, instruction or other communication shall be deemed to have been duly delivered unless and until it actually is received by the party for whom it is intended.

Notice. Any notice given hereunder is sufficient if given to the Employee by the Employer, or if mailed to the Employee to the last known address of the Employee as such address appears on the records of the Employer.