Exhibit 99.11

FNB UNITED CORP.

Certification of Principal Executive Officer Pursuant
to Section 111(b)(4) of

the Emergency Economic Stabilization Act of 2008

I, Mark A. Severson, certify, based on my knowledge, that:

(i) The compensation committee of FNB United Corp. has discussed, reviewed, and evaluated with senior risk officers at least every six months during any part of the most recently completed fiscal year
that was a TARP period, senior executive officer (SEO) compensation plans and employee compensation plans and the risks these plans pose to FNB United Corp.;

(ii) The compensation committee of FNB United Corp. has identified and limited during any part of the most recently completed fiscal year that was a TARP period any features of the SEO compensation plans
that could lead SEOs to take unnecessary and excessive risks that could threaten the value of FNB United Corp. and has identified any features of the employee compensation plans that pose risks to FNB United Corp. and has limited those features to
ensure that FNB United Corp. is not unnecessarily exposed to risks;

(iii) The compensation committee has reviewed, at least
every six months during any part of the most recently completed fiscal year that was a TARP period, the terms of each employee compensation plan and identified any features of the plan that could encourage the manipulation of reported earnings of
FNB United Corp. to enhance the compensation of an employee, and has limited any such features;

(iv) The compensation
committee of FNB United Corp. will certify to the reviews of the SEO compensation plans and employee compensation plans required under (i) and (iii) above;

(v) The compensation committee of FNB United Corp. will provide a narrative description of how it limited during any part of the most recently completed fiscal year that was a TARP period the features in

(A) SEO compensation plans that could lead SEOs to take unnecessary and excessive risks that could threaten the value of FNB
United Corp.;

(B) Employee compensation plans that unnecessarily expose FNB United Corp. to risks; and

(C) Employee compensation plans that could encourage the manipulation of reported earnings of FNB United Corp. to enhance the compensation
of an employee;

(vi) FNB United Corp. has required that bonus payments to SEOs or any of the next twenty most highly
compensated employees, as defined in the regulations and guidance established under section 111 of EESA (bonus payments), be subject to a recovery or clawback provision during any part of the most recently completed fiscal year that was
a TARP period if the bonus payments were based on materially inaccurate financial statements or any other materially inaccurate performance metric criteria;

(vii) FNB United Corp. has prohibited any golden parachute payment, as defined in the regulations and guidance established under section 111 of EESA, to a SEO or any of the next five most highly
compensated employees during any part of the most recently completed fiscal year that was a TARP period;

(viii) FNB United
Corp. has limited bonus payments to its applicable employees in accordance with section 111 of EESA and the regulations and guidance established thereunder during any part of the most recently completed fiscal year that was a TARP period;

(ix) FNB United Corp. and its employees have complied with the excessive or luxury expenditures policy, as defined in the
regulations and guidance established under section 111 of EESA, during any part of the most recently completed fiscal year that was a TARP period; and any expenses that, pursuant to the policy, required approval of the board of directors, a
committee of the board of directors, an SEO, or an executive officer with a similar level of responsibility were properly approved;



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(x) FNB United Corp. will permit a non-binding shareholder resolution in compliance with any
applicable Federal securities rules and regulations on the disclosures provided under the Federal securities laws related to SEO compensation paid or accrued during any part of the most recently completed fiscal year that was a TARP period;

(xi) FNB United Corp. will disclose the amount, nature, and justification for the offering, during any part of the most
recently completed fiscal year that was a TARP period, of any perquisites, as defined in the regulations and guidance established under section 111 of EESA, whose total value exceeds $25,000 for any employee who is subject to the bonus payment
limitations identified in paragraph (viii);

(xii) FNB United Corp. will disclose whether FNB United Corp., the board of
directors of FNB United Corp., or the compensation committee of FNB United Corp. has engaged during any part of the most recently completed fiscal year that was a TARP period a compensation consultant; and the services the compensation consultant or
any affiliate of the compensation consultant provided during this period;

(xiii) FNB United Corp. has prohibited the payment
of any gross-ups, as defined in the regulations and guidance established under section 111 of EESA, to the SEOs and the next twenty most highly compensated employees during any part of the most recently completed fiscal year that was a TARP period;

(xiv) FNB United Corp. has substantially complied with all other requirements related to employee compensation that are
provided in the agreement between FNB United Corp. and Treasury, including any amendments;

(xv) FNB United Corp. has
submitted to Treasury a complete and accurate list of the SEOs and the twenty next most highly compensated employees for the current fiscal year, with the non-SEOs ranked in descending order of level of annual compensation, and with the name, title,
and employer of each SEO and most highly compensated employee identified; and.

(xvi) I understand that a knowing and
willful false or fraudulent statement made in connection with this certification may be punished by fine, imprisonment, or both. (See, for example 18 U.S.C. 1001.)



|                     |  |                            
|-------------------- |  | ---------------------------
|Date: March 30, 2011 |  | /s/ MARK A SEVERSON        
|                     |  | Mark A. Severson           
|                     |  | Principal Financial Officer