OMB Number 3235-0145 United States Securities and Exchange Commission Washington DC 20549 Schedule 13D/A Under the Securities and Exchange Act of 1934 Amendment No. 4 IMPAC MORTGAGE HOLDINGS, INC. Name of Issuer common stock Title of Class of Securities 45254P102 CUSIP Number Howard Amster, 23811 Chagrin Blvd., Suite 200 Beachwood, Ohio 44122-5525, 216 595-1047 Name, address and telephone number of person authorized to receive notices and communications. October 29, 2008 Date of event which requires filing of this statement. If this filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of 240.13d-1(e) (f) or (g), check the following box / /. Note: Scheduled filed in paper format shall include a signed original and five copies of the schedule including all exhibits. See 240.13D-7 for other parties to who copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that Section of the Act, but shall be subject to all other provisions of the Act (however see the Notes). 1 Name of Reporting Person Howard Amster 2 If a member group a) / / b) /X/ 3 SEC Use only 4 Source of Funds PF 5 Check if Disclosure 6 Citizenship U.S.A. Number of Shares 7 Sole Voting 3,085,220 Beneficially Owned By Each 8 Shared Voting 715,380 Reporting Person With 9 Sole Dispositive 3,085,220 10 Shared Dispositive 715,380 11 Aggregate Amount Beneficially owned 3,085,220 12 Check if Aggregate Amount (11) Excludes Certain Shares 13 Percent of Class Represented by amount in row (11) 4.05 % 14 Type of Reporting Person IN 1 Name of Reporting Person Amster Trading Company 2 If a member group a) / / b) /X/ 3 SEC Use only 4 Source of Funds WC 5 Check if Disclosure 6 Citizenship USA Number of Shares 7 Sole Voting Beneficially Owned By Each 8 Shared Voting 715,380 Reporting Person With 9 Sole Dispositive 10 Shared Dispositive 715,380 11 Aggregate Amount Beneficially owned 12 Check if Aggregate Amount (11) Excludes Certain Shares 13 Percent of Class Represented by amount in row (11) 0.0 % 14 Type of Reporting Person CO 1 Name of Reporting Person Amster Trading Company Charitable Remainder Unitrusts 2 If a member group a) / / b) /X/ 3 SEC Use only 4 Source of Funds AF 5 Check if Disclosure 6 Citizenship USA Number of Shares 7 Sole Voting Beneficially Owned By Each 8 Shared Voting 715,380 Reporting Person With 9 Sole Dispositive 10 Shared Dispositive 715,380 11 Aggregate Amount Beneficially owned 715,380 12 Check if Aggregate Amount (11) Excludes Certain Shares 13 Percent of Class Represented by amount in row (11) 0.94 % 14 Type of Reporting Person OO This is the fourth amendment to Schedule 13D for IMPAC Mortgage Holdings, Inc. common shares. Item 4. Purpose of Transaction The following member group decreased their holdings and ceased to be beneficial owners of more than five percent of the common stock of IMPAC Mortgage Holdings Inc. Howard Amster Amster Trading Company, Amster Trading Company Charitable Remainder Unitrusts Item 5. Interest in Securities of the Issuer Issuer's Form 10-Q/A Amendment No. 1 for fiscal year ending June 30, 2008 references 76,096,392 shares of common stock outstanding as of September 12, 2008. (a)(b) The aggregate amount owned by this Reporting Group is 3,800,600 shares or 4.99 % of the outstanding shares. Howard Amster in his name and individual retirement accounts owns 3,085,220 shares or 4.05 % of the common outstanding shares. Amster Trading Company Charitable Remainder Unitrusts own 715,380 shares or 0.94 % of the common outstanding shares. c) Description of Transactions Executed over the counter as open market transactions with JP Morgan Clearing Corp. Identity Date Shares Price Sells Howard Amster 10/20/08 3,400 .1824 10/21/08 140,600 .2679 10/23/08 24,700 .2302 10/24/08 9,900 .2093 10/27/08 7,900 .1907 10/28/08 252,000 .1906 10/29/08 57,280 .1815 10/30/08 154,670 .175 Amster Limited 10/30/08 2,400 .175 Partnership Amster Trading 10/29/08 545,720 .1815 Company Amster Trading Co 10/30/08 93,430 .175 CRUTs 10/31/08 274,430 .1753 11/03/08 65,925 .1821 11/04/08 127,300 .1855 11/05/08 32,800 .1709 11/06/08 165,400 .1576 Samuel Heller Trust 10/30/08 12,000 .175 Pleasant Lake 10/30/08 19,500 .175 Apts. Corp. Pleasant Lake Apts. 10/30/08 25,000 .175 Ltd. Partership e) This member group ceased to be beneficial owners of more than five percent of IMPAC Mortgage Holdings, Inc. common on November 6, 2008. These former members sold their IMPAC Mortgage Holdings, Inc. common shares and are not part of this member group. Amster Limited Partnership Samuel Heller Samuel Heller Trust Pleasant Lake Apts. Corporation Pleasant Lake Apts. Ltd. Partnership They disclaim ownership, shared voting, dispositive, pecuniary interest in any IMPAC Mortgage Holdings, Inc. common shares owned by the current filers. Signature: After reasonable inquiry and to the best of our knowledge and belief, we certify that the information set forth in this statement is true, complete and correct. Date: November 6, 2008 /s/ Howard Amster /s/ Amster Trading Company By: Howard Amster Title: President /s/ Amster Trading Company Charitable Remainder Unitrusts By: Howard Amster Title: Trustee