Sec Form 13D Filing - WITTENBERG ROGER A @ TREX CO INC

Insider filing report for Changes in Beneficial Ownership

Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 5)*

Trex Company, Inc.

(Name of Issuer)

Common Stock, par value $.01 per share

(Title of Class of Securities)

89531P 105

(CUSIP Number)

Roger A. Wittenberg

P.O. Box 6622, Incline Village, Nevada 89459

775-831-2364

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

April 20, 2004

(Date of Event which Requires filing of this Statement)

If the 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), 240.13d-1(f) or 240.13d-1(g), check the following box. ¨

Note: Schedules filed in paper format shall include a singed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom 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 class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in 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).

Page 1 of 9

CUSIP No. 89531P 105


1.		Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Roger A. Wittenberg
2.		Check the Appropriate Box if a Member of a Group (See Instructions) N/A (a) (b)
3.		SEC Use Only
4.		Source of Funds (See Instructions) OO
5.		Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)
6.		Citizenship or Place of Organization U.S.A.

Number of

Beneficially

Owned by

Each

Reporting

Person

With

7. Sole Voting Power

535,586

8. Shared Voting Power

9. Sole Dispositive Power

535,586

10. Shared Dispositive Power


11.		Aggregate Amount Beneficially Owned by Each Reporting Person 535,586
12.		Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) N/A
13.		Percent of Class Represented by Row (11) 3.6%
14.		Type of Reporting Person (See Instructions) IN

Page 2 of 9

This Amendment No. 5 further amends the Schedule 13D filed on April 12, 1999 by Roger A. Wittenberg relating to the common stock, par value $.01 per share (the “Common Stock”), of Trex Company, Inc. (the “Company”), which was amended by that certain Amendment No. 1 filed on June 1, 2001, that certain Amendment No. 2 filed on January 21, 2003, that certain Amendment No. 3 filed on August 25, 2003, and that certain Amendment No. 4 filed on April 5, 2004 (“Amendment No. 4”). Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to them in the initial Schedule 13D.

Item 2.

Identity and Background

Item 2 is hereby amended and restated in its entirety as follows:

This statement is being filed by Roger A. Wittenberg (the “Reporting Person”). The Reporting Person retired from his occupation as Executive Vice President of Recycling of the Company on October 3, 2003 and he is no longer affiliated with the Company. The Reporting Person’s address is P.O. Box 6622, Incline Village, Nevada 89459.

During the last five years, the Reporting Person has not been (i) convicted in a criminal proceeding (excluding traffic violations and similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

The Reporting Person is a citizen of the United States.

Item 4.

Purpose of Transaction

Item 4 is hereby amended and restated in its entirety as follows:

As of the date of this report, the Reporting Person beneficially owns an aggregate of 535,586 shares of Common Stock of the Company, which represents approximately 3.6% of the shares of Common Stock outstanding as of July 30, 2004, as reported in the Company’s Quarterly Report on Form 10-Q filed on August 5, 2004. The 535,586 shares of Common Stock beneficially owned by the Reporting Person include options exercisable within 60 days of August 25, 2004 to purchase 33,736 shares of Common Stock.

As previously disclosed, the Reporting Person acquires and holds Common Stock, as described in Item 4 of the initial Schedule 13D, for investment purposes. The Reporting Person may, from time to time, depending upon market conditions and other factors deemed relevant by the Reporting Person, acquire additional shares of Common Stock or sell shares of Common Stock currently owned or hereafter acquired. In that regard, on August 2, 2002, the Reporting Person entered into a sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, pursuant to which the Reporting Person sold 484,350 shares of Common Stock through August 21, 2003. The Reporting Person entered into a subsequent sales plan on July 30, 2003, pursuant to which the Reporting Person sold 293,350 shares of Common Stock. In addition to the shares sold pursuant to the July 30, 2003 sales plan the Reporting Person sold 710,000 shares of Common Stock since August 27, 2003.

Page 3 of 9

Between April 5, 2004, the date Amendment No. 4 was filed, and April 20, 2004, the Reporting Person sold an aggregate of 172,000 shares of Common Stock for an aggregate sales price of $6,484,467 in the transactions described on Exhibit A to this Amendment No. 5. As of April 20, 2004, the Reporting Person beneficially owned an aggregate of 1,196,736 shares of Common Stock, which represented approximately 8.1% of the shares outstanding as of July 30, 2004. The 1,196,736 shares of Common Stock beneficially owned by the Reporting Person as of April 20, 2004 included 3,000 shares of Common Stock held by the Reporting Person’s spouse and options exercisable within 60 days of April 20, 2004 to purchase 33,736 shares of Common Stock.

On April 21, 2004, the Reporting Person sold an aggregate of 198,150 shares of Common Stock for an aggregate sales price of $7,818,772 in the transactions described on Exhibit A to this Amendment No. 5. As of April 21, 2004, the Reporting Person beneficially owned an aggregate of 998,586 shares of Common Stock, which represented approximately 6.8% of the shares outstanding as of July 30, 2004. The 998,586 shares of Common Stock beneficially owned by the Reporting Person as of April 21, 2004 included 3,000 shares of Common Stock held by the Reporting Person’s spouse and options exercisable within 60 days of April 21, 2004 to purchase 33,736 shares of Common Stock.

Between April 22, 2004 and July 23, 2004 the Reporting Person sold an aggregate of 245,000 shares of Common Stock for an aggregate sales price of $9,791,010 in the transactions described on Exhibit A to this Amendment No. 5. As of July 23, 2004, the Reporting Person beneficially owned an aggregate of 750,586 shares of Common Stock, which represented approximately 5.0% of the shares outstanding as of July 30, 2004. The Reporting Person’s spouse also sold 3,000 shares on July 23, 2004 for an aggregate sales price of $124,061. The 750,586 shares of Common Stock beneficially owned by the Reporting Person as of July 23, 2004 included options exercisable within 60 days of July 23, 2004 to purchase 33,736 shares of Common Stock.

Between July 24, 2004 and July 26, 2004, the Reporting Person sold an aggregate of 53,750 shares of Common Stock for an aggregate sales price of $2,263,852 in the transactions described on Exhibit A to this Amendment No. 5. As of July 26, 2004, the Reporting Person beneficially owned an aggregate of 696,836 shares of Common Stock, which represented approximately 4.7% of the shares outstanding as of July 30, 2004. The 696,836 shares of Common Stock beneficially owned by the Reporting Person as of July 26, 2004 included options exercisable within 60 days of July 26, 2004 to purchase 33,736 shares of Common Stock.

Except as described in this Amendment No. 5 to the initial Schedule 13D, the Reporting Person has no current plans or proposals that relate to or would result in any of the actions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

Item 5.

Interest in Securities of the Issuer

Item 5 is hereby amended and restated in its entirety as follows:

(a) As of the date of this report, the Reporting Person beneficially owns an aggregate of 535,586 shares of Common Stock of the Company, which represents approximately 3.6% of the shares of Common Stock outstanding as of July 30, 2004. The 535,586 shares of Common Stock beneficially owned by the Reporting Person include

Page 4 of 9

options exercisable within 60 days of August 25, 2004 to purchase 33,736 shares of Common Stock.

(b) The number of shares of Common Stock as to which the Reporting Person has


(i)	sole power to vote or direct the vote is	535,586¹

(ii)	shared power to vote or direct the vote is	0

(iii)	sole power to dispose or direct the disposition is	535,586²

(iv)	shared power to dispose or direct the disposition is	0

(d) Not applicable.

(e) Not applicable.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: August 25, 2004

/s/ LYNN E. MACDONALD,

by Power of Attorney for Roger A. Wittenberg

¹	Includes options exercisable within 60 days of August 25, 2004 to purchase 33,736 shares of Common Stock.

²	Includes options exercisable within 60 days of August 25, 2004 to purchase 33,736 shares of Common Stock.

Page 5 of 9

Exhibit A


Trade Date	Number of Shares	Price		Sales Proceeds
03/30/04	2,500	$	33.13	$	82,501.27
04/05/04	2,500	$	33.35	$	83,048.54
04/08/04	2,500	$	33.51	$	83,466.03
04/12/04	2,500	$	33.43	$	83,271.04
04/15/04	3,750	$	36.93	$	137,997.50
04/16/04	500	$	38.80	$	19,359.54
04/16/04	3,300	$	38.65	$	127,278.01
04/16/04	2,200	$	38.62	$	84,786.01
04/16/04	1,900	$	38.61	$	73,205.28
04/16/04	100	$	38.21	$	3,812.91
04/16/04	5,700	$	38.20	$	217,278.90
04/16/04	4,700	$	38.44	$	180,287.77
04/16/04	9,400	$	38.43	$	360,481.54
04/16/04	1,200	$	38.40	$	45,982.92
04/16/04	200	$	38.47	$	7,677.81
04/16/04	5,400	$	38.52	$	207,571.13
04/16/04	2,300	$	38.51	$	88,386.92
04/16/04	12,400	$	38.50	$	476,396.82
04/16/04	400	$	38.59	$	15,403.63
04/16/04	100	$	38.49	$	3,840.90
04/16/04	300	$	38.63	$	11,564.72
04/16/04	500	$	38.85	$	19,384.54
04/16/04	300	$	38.48	$	11,519.72
04/16/04	300	$	38.76	$	11,603.72
04/16/04	200	$	38.77	$	7,737.81
04/16/04	700	$	38.75	$	27,068.36
04/16/04	300	$	38.64	$	11,567.72
04/16/04	400	$	38.81	$	15,491.63
04/16/04	100	$	38.78	$	3,869.90
04/16/04	100	$	38.82	$	3,873.90
04/16/04	1,500	$	38.58	$	57,748.64
04/16/04	400	$	38.54	$	15,383.63
04/16/04	600	$	38.53	$	23,069.45
04/16/04	400	$	38.60	$	15,407.63
04/16/04	6,800	$	38.10	$	258,529.93
04/16/04	200	$	38.12	$	7,607.82
04/16/04	2,200	$	38.11	$	83,664.03
04/16/04	100	$	38.16	$	3,807.91
04/16/04	800	$	38.14	$	30,447.28
04/16/04	1,800	$	38.17	$	68,560.39
04/16/04	600	$	38.18	$	22,859.46

Page 6 of 9


Trade Date	Number of Shares	Price		Sales Proceeds
04/16/04	900	$	38.19	$	34,298.19
04/16/04	800	$	38.25	$	30,535.28
04/16/04	300	$	38.45	$	11,510.73
04/16/04	100	$	38.88	$	3,879.90
04/16/04	200	$	38.86	$	7,755.81
04/16/04	600	$	38.89	$	23,285.45
04/16/04	100	$	38.90	$	3,881.90
04/16/04	200	$	38.94	$	7,771.81
04/16/04	200	$	38.57	$	7,697.81
04/16/04	2,200	$	38.56	$	84,654.01
04/16/04	1,000	$	38.55	$	38,469.09
04/19/04	35,000	$	37.70	$	1,316,613.12
04/20/04	45,600	$	37.83	$	1,721,309.47
04/20/04	2,650	$	37.86	$	100,001.50
	172,000			$	6,484,466.73

04/21/04	194,400	$	39.55	$	7,672,554.81
04/21/04	3,750	$	39.12	$	146,216.94
	198,150			$	7,818,771.75

04/22/04	25,000	$	40.44	$	1,008,906.34
04/29/04	3,750	$	38.87	$	145,290.71
04/30/04	3,750	$	39.09	$	146,126.94
05/04/04	3,750	$	38.55	$	144,105.74
05/07/04	2,500	$	37.00	$	92,182.33
05/11/04	2,500	$	35.75	$	89,066.40
05/13/04	2,500	$	35.89	$	89,420.90
05/18/04	2,500	$	34.75	$	86,550.46
05/19/04	2,500	$	34.94	$	87,042.45
05/24/04	2,500	$	35.24	$	87,789.93
05/28/04	2,500	$	36.32	$	90,476.37
06/01/04	1,250	$	36.27	$	45,180.18
06/01/04	1,250	$	36.25	$	45,152.68
06/02/04	2,500	$	36.24	$	90,293.37
06/07/04	2,500	$	36.02	$	89,744.39
06/08/04	2,500	$	36.36	$	90,597.37
06/15/04	100	$	36.79	$	3,666.41
06/15/04	100	$	36.47	$	3,634.41
06/15/04	100	$	36.52	$	3,639.41
06/15/04	100	$	36.37	$	3,624.41
06/15/04	100	$	36.36	$	3,623.41
06/15/04	100	$	37.00	$	3,687.41
06/15/04	100	$	36.85	$	3,672.41
06/15/04	100	$	36.80	$	3,667.41

Page 7 of 9


Trade Date	Number of Shares	Price		Sales Proceeds
06/15/04	150	$	36.97	$	5,526.62
06/15/04	100	$	36.93	$	3,680.41
06/15/04	100	$	36.94	$	3,681.41
06/15/04	100	$	36.17	$	3,604.41
06/15/04	100	$	36.79	$	3,666.41
06/15/04	100	$	36.35	$	3,622.41
06/15/04	100	$	36.32	$	3,619.41
06/15/04	100	$	37.00	$	3,687.41
06/15/04	100	$	36.86	$	3,673.41
06/15/04	100	$	36.80	$	3,667.41
06/15/04	150	$	36.98	$	5,528.12
06/15/04	100	$	36.47	$	3,634.41
06/15/04	100	$	36.52	$	3,639.41
06/15/04	100	$	36.93	$	3,680.41
06/15/04	100	$	36.94	$	3,681.41
06/15/04	100	$	36.17	$	3,604.41
06/17/04	100	$	37.02	$	3,689.41
06/17/04	100	$	37.14	$	3,701.41
06/17/04	100	$	37.12	$	3,699.41
06/17/04	100	$	37.16	$	3,703.41
06/17/04	100	$	37.09	$	3,696.41
06/17/04	100	$	37.06	$	3,693.41
06/17/04	100	$	36.85	$	3,672.41
06/17/04	100	$	36.81	$	3,668.41
06/17/04	100	$	36.88	$	3,675.41
06/17/04	150	$	37.39	$	5,589.61
06/17/04	200	$	37.31	$	7,436.82
06/17/04	100	$	37.09	$	3,696.41
06/17/04	100	$	37.06	$	3,693.41
06/17/04	100	$	36.85	$	3,672.41
06/17/04	100	$	36.81	$	3,668.41
06/17/04	100	$	36.88	$	3,675.41
06/17/04	100	$	37.02	$	3,689.41
06/17/04	100	$	37.14	$	3,701.41
06/17/04	100	$	37.12	$	3,699.41
06/17/04	100	$	37.16	$	3,703.41
06/17/04	100	$	37.25	$	3,712.41
06/17/04	150	$	37.39	$	5,589.61
06/17/04	100	$	37.32	$	3,719.41
06/21/04	2,500	$	37.41	$	93,207.31
06/23/04	2,500	$	37.22	$	92,742.32

Page 8 of 9


Trade Date	Number of Shares	Price		Sales Proceeds
06/29/04	100	$	37.64	$	3,751.41
06/29/04	200	$	37.60	$	7,494.82
06/29/04	100	$	37.51	$	3,738.41
06/29/04	100	$	37.50	$	3,737.41
06/29/04	100	$	37.57	$	3,744.41
06/29/04	100	$	37.56	$	3,743.41
06/29/04	100	$	38.07	$	3,794.41
06/29/04	150	$	37.77	$	5,646.61
06/29/04	100	$	37.71	$	3,758.41
06/29/04	100	$	37.67	$	3,754.41
06/29/04	200	$	37.60	$	7,494.82
06/29/04	150	$	37.77	$	5,646.61
06/29/04	100	$	37.72	$	3,759.41
06/29/04	100	$	37.70	$	3,757.41
06/29/04	100	$	37.46	$	3,733.41
06/29/04	100	$	37.70	$	3,757.41
06/29/04	100	$	37.48	$	3,735.41
06/29/04	100	$	37.45	$	3,732.41
06/29/04	100	$	37.51	$	3,738.41
06/29/04	100	$	37.57	$	3,744.41
06/29/04	100	$	37.56	$	3,743.41
06/29/04	100	$	38.07	$	3,794.41
06/29/04	1,250	$	38.07	$	47,430.13
07/02/04	2,500	$	37.35	$	93,067.31
07/06/04	2,500	$	37.08	$	92,396.83
07/07/04	2,500	$	37.07	$	92,359.33
07/12/04	1,250	$	36.81	$	45,860.67
07/12/04	1,250	$	36.81	$	45,855.17
07/15/04	2,500	$	37.69	$	93,901.29
07/20/04	1,250	$	37.12	$	46,244.16
07/20/04	1,250	$	37.12	$	46,239.66
07/21/04	2,500	$	37.19	$	92,663.32
07/23/04	100,000	$	41.17	$	4,108,973.66
07/23/04	50,000	$	41.97	$	2,094,480.89
	245,000			$	9,791,009.85

07/26/04	50,000	$	42.25	$	2,108,660.56
07/26/04	3,750	$	41.51	$	155,191.23
	53,750			$	2,263,851.79

Page 9 of 9

Sec Form 13D Filing - WITTENBERG ROGER A filing for TREX CO INC (TREX) - 2004-08-25