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Exhibit 4.6

MAIN STREET CAPITAL CORPORATION

2022 EQUITY AND INCENTIVE PLAN

RESTRICTED STOCK AGREEMENT

This Restricted Stock Agreement (this “Agreement”) between Main Street Capital Corporation (the “Company”) and [__________________] (the “Grantee”), an employee of the Company or one of its subsidiaries, regarding an award (“Award”) of [_________] shares of Stock (as defined in the 2022 Equity and Incentive Plan (the “Plan”), such Stock comprising this Award referred to herein as “Restricted Stock”) awarded to the Grantee under the Plan on [___________] (the “Award Date”), such number of shares subject to adjustment as provided in the Plan, and further subject to the following terms and conditions:

1.Relationship to Plan.

This Award is subject to all of the terms, conditions and provisions of the Plan and administrative interpretations thereunder or amendments, if any, which are adopted by the Committee.  Except as defined herein, capitalized terms used herein shall have the same meanings ascribed to them under the Plan.  For purposes of this Agreement:

(a)“Authorized Officer” means any of the Chief Executive Officer, President, Chief Operating Officer, Chief Financial Officer or General Counsel of the Company.

(b)[Termination for “Cause” means termination by the Company of the Grantee’s employment with the Company or one of its subsidiaries for the Grantee’s:

For purposes of this Section 1(b), an act or failure to act by the Grantee shall be considered “willful” only if the Grantee’s conduct was not in good faith and the Grantee lacked a reasonable belief that the Grantee’s act or omission was in the best interests of the Company.]

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(c) “Disability” means, due to sickness or as a direct result of accidental injury, the Grantee is eligible for and receiving long-term disability benefits under a disability income replacement plan offered by the Company.

(d)“Employment” means employment with the Company or any of its Subsidiaries.

(e)“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

(f)[Termination for “Good Reason” shall mean a termination by the Grantee of the Grantee’s employment with the Company for any of the following reasons:

(i)the Company’s failure to perform any of its material obligations under the terms of the Grantee’s employment arrangement or agreement;

(ii)unless otherwise agreed or waived, written notice of a proposed relocation by the Company of the Grantee’s principal place of employment to a site outside a fifty (50) mile radius of the current site of the Grantee’s principal place of employment; or

(iii)the failure by a successor in interest to the Company to expressly assume the Company’s obligations under the terms of the Grantee’s employment arrangement or agreement.

A termination by the Grantee for Good Reason may not occur unless the Grantee has given notice to the Company within 90 days of the Grantee’s knowledge of the initial existence of a condition described in clauses (i) through (iii) above, and the Company shall have a period of at least 30 days (the “Correction Period”) during which it may remedy the condition.  If the Company remedies the condition within the Correction Period, the Grantee may not terminate for that Good Reason event.

A termination for “Good Reason” may occur only within 30 days immediately following the expiration of the Correction Period.]

(g)[Termination “Without Cause” shall mean a termination by the Company of the Grantee’s employment for any reason other than death, Disability, or Cause.]

(a)The restrictions on the shares of Restricted Stock subject to this Award shall lapse and such shares shall vest in [___]equal installments on [each of the first [___] anniversaries of the Award Date] [OR][___________ and the next [___] anniversaries thereof] (each a “Vesting Date”), provided that the Grantee has been in continuous Employment from the Award Date through the respective Vesting Date, provided, further that

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if an Award anniversary falls on a day that is not a business day, the Vesting Date shall be the next following business day.  Notwithstanding the foregoing, pursuant to the terms of the Plan, the Board or its Committee may, in its sole discretion, accelerate the time at which the shares of Restricted Stock subject to this Award shall vest.

(b)All shares of Restricted Stock subject to this Award shall vest, irrespective of the limitations set forth in subparagraph (a) above, provided that the Grantee has been in continuous Employment since the Award Date, upon the occurrence of:

(i)a Change in Control; [or]

(ii)the Grantee’s termination of employment by reason of death or Disability[; or]

(iii)[the Grantee’s termination of employment by the Grantee for Good Reason or by the Company Without Cause.]

Except as specifically provided in Section 2 above, upon the Grantee’s termination of employment all unvested shares of Restricted Stock as of the termination date shall be forfeited.

During the period of time between the Award Date and the earlier of the date the Restricted Stock vests or is forfeited (the “Restriction Period”), the Restricted Stock shall be registered in the name of the Grantee and held in escrow by the Company or in a book-entry account with the Company’s transfer agent, and the Grantee agrees, upon the Company’s written request, to provide a stock power endorsed by the Grantee in blank.  Any certificate or book-entry account shall bear a legend or notation as provided by the Company, conspicuously referring to the terms, conditions and restrictions described in this Agreement.  Upon termination of the Restriction Period, if the shares of Restricted Stock are held in certificated form, a certificate representing such shares without any legend referring to the terms, conditions and restrictions described in this Agreement shall be delivered to the Grantee, and if the shares of Restricted Stock are held in book-entry form, the Company shall instruct the transfer agent to remove any notation referring to the terms, conditions and restrictions described in this Agreement, in each case, as promptly as is reasonably practicable following such termination. Fractional shares will not be issued.

The Grantee shall be permitted to make an election under Code Section 83(b), to include an amount in income in respect of the Award of Restricted Stock in accordance with the requirements of Code Section 83(b).  Grantee acknowledges that such election must be filed with the Internal Revenue Service within 30 days of the grant of the Award for which such election is made. Grantee is solely responsible for making such election.

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During the Restricted Period, the Grantee shall have the right to vote or execute proxies with respect to the shares of Restricted Stock subject to this Award and to receive any cash or stock dividends paid or distributed with respect thereto, unless and until the Restricted Stock is forfeited.  Cash or stock dividends paid or distributed with respect to outstanding Restricted Stock shall be fully vested and nonforfeitable upon receipt.  Notwithstanding the foregoing, in the case of a stock split affected by the Company by means of a stock dividend or any stock dividends affected as part of a recapitalization of the Company or similar event, any stock dividends distributed with respect to the underlying Restricted Stock shall be subject to the same restrictions provided for herein with respect to such Restricted Stock, and the dividend shares so paid or distributed shall be deemed Restricted Stock subject to all terms and conditions herein, provided that the vesting schedule with respect thereto shall be equal installments over the remaining number of installments applicable to the Restricted Stock with respect to which such shares are paid or distributed.

The Company shall not be obligated to deliver any shares of Stock if counsel to the Company determines that such sale or delivery would violate any applicable law or any rule or regulation of any governmental authority or any rule or regulation of, or agreement of the Company with, any securities exchange or association upon which the Stock is listed or quoted.  The Company shall in no event be obligated to take any affirmative action in order to cause the delivery of shares of Stock to comply with any such law, rule, regulation or agreement.

Except as otherwise permitted by the Committee, the Grantee’s rights under the Plan and this Agreement are personal; no assignment or transfer of the Grantee’s rights under and interest in this Award may be made by the Grantee other than by will or by the laws of descent and distribution.

In consideration of the Award being made hereunder, the Grantee agrees that the Company (or a representative of any underwriters, initial purchasers or placement agents the Company may designate) may, in connection with any offering of any securities of the Company require that the Grantee not sell or otherwise transfer or dispose of any shares of Stock or other securities of the Company during such period (not to exceed 180 days) following such offering or such other date as may be requested by the Company or such representative of the underwriters, initial purchasers or placement agents.  For purposes of this restriction, the Grantee will be deemed to own shares of Stock which: (a) are owned directly or indirectly by the Grantee, including securities held for the Grantee’s benefit by nominees, custodians, brokers, or pledgees; (b) may be acquired by the Grantee under this Award at any time, or otherwise be acquired by the Grantee within 60 days of the offering or other date set by the Company or the representative of the underwriters; (c) are owned directly or indirectly, by or for the Grantee’s spouse and any of his children who reside at his principal residence and over which Grantee can exercise dispositive

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authority; or (d) are owned, directly or indirectly, by or for a corporation, partnership, estate, or trust of which the Grantee is a shareholder, partner, beneficiary, or trustee and over which Grantee can exercise dispositive authority, but in the event the Grantee is a shareholder, partner, or beneficiary, only to the extent of the Grantee’s proportionate interest therein as a shareholder, partner, or beneficiary thereof.  The Grantee further agrees that the Company may impose “stop transfer” instructions with respect to securities subject to the foregoing restrictions until the end of such period.

At the time of delivery or vesting of Restricted Stock, the amount of, if applicable, all federal, state and other governmental withholding tax requirements imposed upon the Company with respect to the delivery or vesting of such shares of Restricted Stock shall be remitted to the Company or provisions to pay such withholding requirements shall have been made to the satisfaction of the Committee.  The Committee may make such provisions as it may deem appropriate for the withholding of any taxes which it determines is required in connection with this Award.  The Committee may satisfy such withholding by retaining shares of Restricted Stock that have vested, or by permitting the Grantee to deliver cash or previously owned shares of Stock, in each case having a fair market value (as determined by the Committee in accordance with the Plan), equal to the amount required to be withheld or paid.

Certificates or book-entry account representing the Stock issued pursuant to the Award will bear all legends or notations required by law or determined by the Company or its counsel as necessary or advisable to effectuate the provisions of the Plan and this Award.  The Company may place a “stop transfer” order against shares of the Stock issued pursuant to this Award until all restrictions and conditions set forth in the Plan or this Agreement and in the legends or notations referred to in this Section 11 have been complied with.  The stock transfer records of the Company will reflect stock transfer instructions with respect to such shares.

This Agreement shall bind and inure to the benefit of and be enforceable by the Grantee, the Company and their respective permitted successors and assigns (including personal representatives, heirs and legatees), except that the Grantee may not assign any rights or obligations under this Agreement except to the extent and in the manner expressly permitted herein.

Grantee acknowledges that the tax consequences associated with the Award are complex and that the Company has urged Grantee to review with the Grantee’s own tax advisors the federal, state and local tax consequences of this Award. Grantee is relying solely on such advisors and not on the statements or representations of the Company or its agents. Grantee understands that Grantee (and not the Company) will be responsible for Grantee’s own tax liability that may arise as a result of the Award.

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No provision of this Agreement shall confer any right upon the Grantee to continued Employment.

This Agreement shall be governed by, construed, and enforced in accordance with the laws of the State of Texas without regard to any jurisdiction’s choice of law principles.

This Agreement cannot be modified, altered or amended except by an agreement, in writing, signed by both the Company and the Grantee.

The provisions of this Section 17 shall be the exclusive means of resolving disputes of between the Grantee and the Company arising from the Plan or this Agreement, other than a dispute under Section 19. The parties shall attempt in good faith to resolve any disputes arising out of or relating to the Plan or this Agreement by negotiation between individuals who have authority to settle the controversy. Within 30 days of written notification regarding a dispute, the parties shall meet at such times and places as may be required to attempt to resolve the dispute. If the dispute has not been resolved within 90 days of the written notification, either party may file suit and all parties agree that any suit, action or proceeding arising in connection with the Plan or this Agreement shall be brought in the United States District Court of the Southern District of Texas (or should such Court lack jurisdiction to hear such action, suit or proceeding, in a Texas state court in Harris County, Texas) and that the parties shall submit to the jurisdiction of such court. The parties to this Agreement irrevocably waive, to the fullest extent permitted by law, any objection a party may have to the laying of venue for any such suit, action or proceeding brought in such court. THE PARTIES ALSO WAIVE ANY RIGHT THEY HAVE OR MAY HAVE TO A JURY TRIAL OF ANY SUCH SUIT, ACTION OR PROCEEDING. If any one or more provisions of this Section 17 shall for any reason be held invalid or unenforceable, it is the specific intent of the parties that such provisions shall be modified to the minimum extent necessary to make it or its application valid and enforceable.

Notwithstanding any provision of this Agreement to the contrary, this Agreement is intended to provide for a grant of a stock right that is exempt from Section 409A of the Code and related regulations and United States Department of the Treasury pronouncements (“Section 409A”) as property transferred subject to Section 83 of the Code, as defined in Treasury Regulation 1.409A-1(b)(4)(B).  Any ambiguous provisions will be construed in a manner that is compliant with or exempt from the application of Section 409A.

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(a)[In consideration for the grant of the Award, the Grantee agrees that, except as authorized by an Authorized Officer, he or she will not during the Grantee’s employment with the Company or any of its subsidiaries or affiliates, and for one year thereafter, directly or indirectly, personally, or as an employee, officer, director, principal of or investor in, or consultant or independent contractor with, another entity, engage in business with, be employed by, or render any consultation or business advice or other services with respect to, any business in the United States which competes with the Company Business; provided, however, that Grantee may invest in (i) up to (but not more than) one percent (1%) of any class of securities of any enterprise (but without otherwise participating in the management or activities of such enterprise) if such securities are listed on any national or regional securities exchange or have been registered under Section 12(g) of the Securities Exchange Act of 1934 or (ii) up to (but not more than) ten percent (10%) of any class of securities of any private fund (but without otherwise participating in the management or activities of such enterprise).  For purposes of this Agreement, the term “Company Business” means investing through equity capital or long-term debt in lower middle-market businesses and/or investing through long-term debt in middle-market businesses.] [OR][Reserved.]

(b)In consideration for the grant of the Award, the Grantee agrees that, except as authorized by an Authorized Officer, he or she will not, during the Grantee’s employment with the Company or any of its subsidiaries or affiliates, and for one year thereafter, directly or indirectly for his or her own account or on behalf of or together with another person, entity or organization  (i) call on or otherwise solicit any natural person who is employed by the Company or any of its subsidiaries or affiliates in any capacity with the purpose or intent of attracting that person from the employ of the Company or its subsidiaries or affiliates, (ii) employ, retain or otherwise engage (other than on the Company’s behalf) any natural person who is employed, or who was employed in the last year, by the Company or any of its subsidiaries or affiliates in any capacity, or (iii) divert or attempt to divert any potential investment opportunities away from the Company.

(c)As further consideration for the grant of the Award, the Grantee agrees that, except as authorized by an Authorized Officer, he or she will not at any time, with while employed by the Company or its subsidiaries or affiliates, or any time thereafter, make any independent use of, or disclose to any person  any confidential, non-public and/or proprietary information of the Company and its subsidiaries or affiliates, including, without limitation, information derived from models, processes, reports, ideas, investment opportunities, legal documents, or other information in any form prepared by or performed by or on behalf of the Company or any of its subsidiaries or affiliates.

This Section 19 shall survive the termination of this Agreement.

20.Award Repayment Obligation.

The Grantee agrees that in the event the Company determines that the Grantee has (a) been terminated for Cause pursuant to Section 1(b) of this Agreement, (b) violated any of the restrictive covenants in Section 19 of this Agreement, or (c) engaged in intentional misconduct that caused

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or substantially caused the need for a restatement of the Company’s financial statements, the Company may, in its discretion and to the extent permitted by applicable law, cause the full or partial cancellation of any unvested shares of Restricted Stock outstanding under this Award and, with respect to shares of Restricted Stock that have vested since the date one year prior to the date that the Grantee is notified of such determination, require the Grantee to repay to the Company the full or partial fair market value of the Award at the time of vesting, less any nonrefundable federal, state, or local taxes actually paid with respect to the Award.  A Participant’s repayment obligations hereunder may, at the election of the Company, be satisfied by a cash payment, delivery of Stock or such combination of the foregoing as the Company in its discretion may determine.  Repayments pursuant to this Section 20 shall be made within sixty (60) days after written demand for repayment is made by the Company.  This Section 20 shall survive the termination of this Agreement.

[Signature page follows]

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The Grantee hereby accepts the foregoing Restricted Stock Agreement, subject to the terms and provisions of the Plan and administrative interpretations or amendments thereof referred to above.

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[Signature Page to Restricted Stock Agreement]