Exhibit 3.2

AMENDMENT NO. 4

AMENDED AND RESTATED BYLAWS, AS AMENDED

IMPAC MORTGAGE HOLDINGS, INC.

Article VII of the Amended and Restated Bylaws, as amended, shall be stricken in its entirety and replaced with the following:

ARTICLE VII

STOCK

Section 1. CERTIFICATES. Shares of the capital stock of the Corporation may be certificated or uncertificated, as provided under the Maryland General Corporation Law. Except as otherwise provided in these Bylaws, this Section shall not be interpreted to limit the authority of the Board of Directors to issue some or all of the shares of any or all of the Corporation’s classes or series without certificates. Each stockholder, upon written request to the secretary of the Corporation, shall be entitled to a certificate or certificates which shall represent and certify the number of shares of each class of stock held by the stockholder in the Corporation. Each certificate shall be signed by the chairman of the Board of Directors, the president, the chief executive officer, the chief operating officer, the head of investments, the chief financial officer or a vice president and countersigned by the secretary or an assistant secretary or the treasurer or an assistant treasurer and may be sealed with the seal, if any, of the Corporation. The signatures may be either manual or facsimile. Certificates shall be consecutively numbered; and if the Corporation shall, from time to time, issue several classes of stock, each class may have its own number series. A certificate is valid and may be issued whether or not an officer who signed it is still an officer when it is issued. Each certificate representing shares which are restricted as to their transferability or voting powers, which are preferred or limited as to their dividends or as to their allocable portion of the assets upon liquidation or which are redeemable at the option of the Corporation, shall have a statement of such restriction, limitation, preference or redemption provision, or a summary thereof, plainly stated on the certificate. If the Corporation has authority to issue stock of more than one class, the certificate shall contain on the face or back a full statement or summary of the designations and any preferences, conversion and other rights, voting powers, restrictions, limitations as to dividends and other distributions, qualifications and terms and conditions of redemption of each class of stock and, if the Corporation is authorized to issue any preferred or special class in series, the differences in the relative rights and preferences between the shares of each series to the extent they have been set and the authority of the Board of Directors to set the relative rights and preferences of subsequent series. In lieu of such statement or summary, the certificate may state that the Corporation will furnish a full statement of such information to any stockholder upon request and without charge. If any class of stock is restricted by the Corporation as to transferability, the certificate shall contain a full statement of the restriction or state that the Corporation will furnish information about the restrictions to the stockholder on request and without charge.

Within a reasonable time after the issuance or transfer of uncertificated stock, the Corporation shall send, or cause its transfer agent to send, to the registered owner thereof a

written notice that shall set forth the name of the Corporation, that the Corporation is organized under the laws of the State of Maryland, the name of the stockholder, the number and class (and the designation of the series, if any) of the shares represented, and any restrictions on the transfer of such shares of stock imposed by law, the Corporation’s Charter, these Bylaws, any agreement among stockholders or any agreement between stockholders and the Corporation.

Section 2. TRANSFERS. Upon surrender to the Corporation or the transfer agent of the Corporation of a stock certificate duly endorsed or accompanied by proper evidence of succession, assignment or authority to transfer, the Corporation shall issue a new certificate or evidence of the issuance of uncertificated shares to the person entitled thereto, cancel the old certificate and record the transaction upon its books.

The Corporation shall be entitled to treat the holder of record of any share of stock as the holder in fact thereof and, accordingly, shall not be bound to recognize any equitable or other claim to or interest in such share or on the part of any other person, whether or not it shall have express or other notice thereof, except as otherwise provided by the laws of the State of Maryland.

Notwithstanding the foregoing, transfers of shares of any class of stock will be subject in all respects to the Charter and all of the terms and conditions contained therein.

Section 3. REPLACEMENT CERTIFICATE. Any officer designated by the Board of Directors may direct (i) a new certificate or (ii) uncertificated shares to be issued in place of any certificate previously issued by the Corporation alleged to have been lost, stolen or destroyed upon the making of an affidavit of that fact by the person claiming the certificate to be lost, stolen or destroyed. When authorizing the issuance of (i) a new certificate or (ii) uncertificated shares, an officer designated by the Board of Directors may, in his or her discretion and as a condition precedent to the issuance thereof, require the owner of such lost, stolen or destroyed certificate or the owner’s legal representative to advertise the same in such manner as he or she shall require and/or to give bond, with sufficient surety, to the Corporation to indemnify it against any loss or claim which may arise as a result of the issuance of a new certificate.

Section 4. CLOSING OF TRANSFER BOOKS OR FIXING OF RECORD DATE. The Board of Directors may set, in advance, a record date for the purpose of determining stockholders entitled to notice of or to vote at any meeting of stockholders or determining stockholders entitled to receive payment of any dividend or the allotment of any other rights, or in order to make a determination of stockholders for any other proper purpose. Such date, in any case, shall not be prior to the close of business on the day the record date is fixed and shall be not more than ninety (90) days and, in the case of a meeting of stockholders, not less than ten (10) days, before the date on which the meeting or particular action requiring such determination of stockholders of record is to be held or taken.

In lieu of fixing a record date, the Board of Directors may provide that the stock transfer books shall be closed for a stated period but not longer than twenty (20) days. If the stock transfer books are closed for the purpose of determining stockholders entitled to notice of or to vote at a meeting of stockholders, such books shall be closed for at least ten (10) days before the date of such meeting.

If no record date is fixed and the stock transfer books are not closed for the determination of stockholders, (a) the record date for the determination of stockholders entitled to notice of or to vote at a meeting of stockholders shall be at the close of business on the day on which the notice of meeting is mailed or the thirtieth (30th) day before the meeting, whichever is the closer date to the meeting; and (b) the record date for the determination of stockholders entitled to receive payment of a dividend or an allotment of any other rights shall be the close of business on the day on which the resolution of the Board of Directors, declaring the dividend or allotment of rights, is adopted.

When a determination of stockholders entitled to vote at any meeting of stockholders has been made as provided in this section, such determination shall apply to any adjournment thereof, except when (i) the determination has been made through the closing of the transfer books and the stated period of closing has expired or (ii) the meeting is adjourned to a date more than one hundred and twenty (120) days after the record date fixed for the original meeting, in either of which case a new record date shall be determined as set forth herein.

Section 5. STOCK LEDGER. The Corporation shall maintain at its principal office or at the office of its counsel, accountants or transfer agent, an original or duplicate stock ledger containing the name and address of each stockholder and the number of shares of each class held by such stockholder.

Section 6. REGULATIONS. The Board may make such rules and regulations and may appoint a transfer agent and one or more co-transfer agents and registrar and one or more co-registrars as it may deem expedient, not inconsistent with these Bylaws, concerning the issue, transfer and registration of certificates for stock of the Corporation.

Section 7. FRACTIONAL STOCK; ISSUANCE OF UNITS. The Board of Directors may issue fractional stock or provide for the issuance of scrip, all on such terms and under such conditions as they may determine. Notwithstanding any other provision of the Charter or these Bylaws, the Board of Directors may issue units consisting of different securities of the Corporation. Any security issued in a unit shall have the same characteristics as any identical securities issued by the Corporation, except that the Board of Directors may provide that for a specified period securities of the Corporation issued in such unit may be transferred on the books of the Corporation only in such unit.