UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
Under the Securities and Exchange Act of 1934

(Amendment No. 4)

Armstrong Flooring, Inc.
(Name of Issuer)

Common Stock
(Title of Class of Securities)

04238R106
(CUSIP Number)

Jason Breeding, Esq.
ValueAct Capital
One Letterman Drive, Building D, Fourth Floor
San Francisco, CA 94129
(415) 362-3700
(Name, address and telephone number of Person
Authorized to Receive Notices and Communications)

November 2, 2020
(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 signed original and five copies of the schedule, including all exhibits. See Rule 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 disclosures provided in a prior cover page.

This 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).


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 2 of 12
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Master Fund, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS (See Instructions)*

   WC*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   British Virgin Islands
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

   1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 3 of 12
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   VA Partners I, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 4 of 12
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, L.P.
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 5 of 12
----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Capital Management, LLC
-----------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Item 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 6 of 12
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Holdings, L.P.
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

---------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Items 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 7 of 12
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Holdings II, L.P.
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

---------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                         [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                    7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES           8.  SHARED VOTING POWER
   BENEFICIALLY          370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH      9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    PN
-----------------------------------------------------------------------------
*See Item 3
**See Items 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 8 of 12
-----------------------------------------------------------------------------
1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE
   PERSON (entities only)

   ValueAct Holdings GP, LLC
---------------------------------------------------------------------------
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [X]
                                                                      (b) [ ]
-----------------------------------------------------------------------------
3. SEC USE ONLY

-----------------------------------------------------------------------------
4. SOURCE OF FUNDS*

   00*
-----------------------------------------------------------------------------
5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
   PURSUANT TO ITEMS 2(d) or 2(e)                                        [ ]
-----------------------------------------------------------------------------
6. CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware
-----------------------------------------------------------------------------
                   7.  SOLE VOTING POWER
                        0
   NUMBER OF       ----------------------------------------------------------
   SHARES          8.  SHARED VOTING POWER
   BENEFICIALLY         370,000**
   OWNED BY EACH   ----------------------------------------------------------
   PERSON WITH     9.  SOLE DISPOSITIVE POWER
                        0
                   ----------------------------------------------------------
                   10.  SHARED DISPOSITIVE POWER
                         370,000**
-----------------------------------------------------------------------------
11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     370,000**
-----------------------------------------------------------------------------
12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
    CERTAIN SHARES                                                        [ ]
-----------------------------------------------------------------------------
13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    1.7%
-----------------------------------------------------------------------------
14. TYPE OF REPORTING PERSON

    00 (LLC)
-----------------------------------------------------------------------------
*See Item 3
**See Items 2 and 5


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 9 of 12
-----------------------------------------------------------------------------

     This Amendment No. 4 to the Schedule 13D supplements the information
set forth in the Schedule 13D filed by the Reporting Persons with the United
States Securities and Exchange Commission (the "SEC"), as amended from time
to time (the "Schedule 13D"), relating to the common stock (the "Common
Stock") of Armstrong Flooring, Inc., a Delaware corporation (the "Issuer").
Capitalized terms contained herein but not otherwise defined shall have the
meanings ascribed to such terms in the Schedule 13D.

     The information set forth in response to each separate Item below shall
be deemed to be a response to all Items where such information is relevant.
The Schedule 13D is hereby supplementally amended as follows:


Item 5. Interest in Securities of the Issuer
     The responses to Items 3, 4 and 6 of this Schedule 13D are incorporated
herein by reference.

(a) and (b). Set forth below is the beneficial ownership of shares of
Common Stock of the Issuer for each person named in Item 2. Shares reported
as beneficially owned by ValueAct Master Fund are also reported as
beneficially owned by (i) ValueAct Management L.P. as the manager of each
such investment partnership, (ii) ValueAct Management LLC, as General Partner
of ValueAct Management L.P., (iii) ValueAct Holdings, as the majority owner
of the membership interests of VA Partners I, (iv) ValueAct Holdings II, as
the sole owner of the limited partnership interests of ValueAct Management
L.P. and the membership interests of ValueAct Management LLC, and (v)
ValueAct Holdings GP, as General Partner of ValueAct Holdings and ValueAct
Holdings II. Shares reported as beneficially owned by ValueAct Master Fund
are also reported as beneficially owned by VA Partners I, as General Partner
of ValueAct Master Fund. VA Partners I, ValueAct Management L.P., ValueAct
Management LLC, ValueAct Holdings, ValueAct Holdings II, and ValueAct
Holdings GP also, directly or indirectly, may own interests in one or more
than one of the partnerships from time to time. Unless otherwise indicated
below, by reason of such relationship ValueAct Master Fund is reported as
having shared power to vote or to direct the vote, and shared power to
dispose or direct the disposition of, such shares of Common Stock, with VA
Partners I (only with respect to ValueAct Master Fund), ValueAct Management
L.P., ValueAct Management LLC, ValueAct Holdings, ValueAct Holdings II, and
ValueAct Holdings GP.

     As of the date hereof, the Reporting Persons may be deemed to be the
beneficial owner of 370,000 shares of Common Stock, representing
approximately 1.7% of the Issuer's outstanding Common Stock. All percentages
set forth in this Schedule 13D are based upon the Issuer's reported
21,626,222 outstanding shares of Common Stock as of October 26, 2020 as
reported in the Issuer's Form 10-Q for the quarterly period ended September
30, 2020.

     (c) The following table sets forth all transactions with respect to
shares of Common Stock effected in the previous sixty days to this
Schedule 13D by the Reporting Persons, inclusive of any transactions effected
through 4:00 p.m., New York City time, on November 4, 2020. Except as
otherwise noted below, all such transactions were sales of shares of Common
Stock effected in the open market.


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 10 of 12
-----------------------------------------------------------------------------

        Shares
Reporting Person      Trade Date     Buy/Sell     Bought/Sold     Price/Share
----------------      ----------     --------     ----------      ----------
ValueAct Master Fund  10/15/2020     Sell         78,787          $5.02
ValueAct Master Fund  10/16/2020     Sell         121,213         $5.11
ValueAct Master Fund  11/02/2020     Sell         332,258         $2.87
ValueAct Master Fund  11/03/2020     Sell         100,000         $2.87
ValueAct Master Fund  11/04/2020     Sell         230,000         $2.78


     Additionally, 9,502 shares, which were previously awarded to Jacob H.
Welch pursuant to the Issuer's director compensation policy, were transferred
to ValueAct Master Fund on October 19, 2020. Under an agreement with ValueAct
Management, L.P., Mr. Welch held these shares for the benefit of the limited
partners of ValueAct Master Fund, L.P. and as such the vested shares were
transferred.

     (d) Not applicable.

     (e) The Reporting Persons have ceased to be beneficial owners of more
than five percent of Issuer?s Common Stock, and accordingly, their obligation
to file a Schedule 13D has been terminated.


Item 6.     Contracts, Arrangements, Understandings or Relationships with
            Respect to Securities of the Issuer

     On June 21, 2019 the Reporting Persons entered into a Joint Filing
Agreement in which the parties agreed to the joint filing on behalf of each
of them of statements on Schedule 13D with respect to the securities of the
Issuer to the extent required by applicable law. The Joint Filing Agreement
is attached as an exhibit to the Schedule 13D and is incorporated herein by
reference.

     Other than as described in this Report, the Reporting Persons have no
understandings, arrangements, relationships or contracts relating to the
Issuer's Common Stock which are required to be described hereunder.


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 11 of 12
-----------------------------------------------------------------------------

                                  SIGNATURE
     After reasonable inquiry and to the best of his knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct.


POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below on this Schedule 13D hereby constitutes and appoints Bradley E. Singer,
G. Mason Morfit and Jason B. Breeding, and each of them, with full power to
act without the other, his or its true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for him or it and in his
or its name, place and stead, in any and all capacities (until revoked in
writing) to sign any and all amendments to this Schedule 13D, and to file the
same, with all exhibits thereto and other documents in connection therewith,
with the Securities and Exchange Commission, granting unto said attorneys-in-
fact and agents, and each of them, full power and authority to do and perform
each and every act and thing requisite and necessary fully to all intents and
purposes as he or it might or could do in person, thereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or
their or his substitute or substitutes, may lawfully do or cause to be done
by virtue hereof.


SCHEDULE 13D

--------------------------                          -------------------------
CUSIP NO. 04238R106                                             Page 12 of 12
-----------------------------------------------------------------------------

                                ValueAct Capital Master Fund L.P., by
                                VA Partners I, LLC, its General Partner

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                VA Partners I, LLC

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                ValueAct Capital Management, L.P., by
                                ValueAct Capital Management, LLC its General
                                Partner

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                ValueAct Capital Management, LLC

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                ValueAct Holdings, L.P., by ValueAct Holdings
                                GP, LLC, its General Partner

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                ValueAct Holdings II, L.P., by ValueAct
                                Holdings GP, LLC, its General Partner

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer


                                ValueAct Holdings GP, LLC

                              By:     /s/  Bradley E. Singer
                                --------------------------------------
Dated:  November 4, 2020        Bradley E. Singer, Chief Operating Officer

Armstrong Flooring (NYSE:AFI)
Historical Stock Chart
From Aug 2021 to Sep 2021 Click Here for more Armstrong Flooring Charts.
Armstrong Flooring (NYSE:AFI)
Historical Stock Chart
From Sep 2020 to Sep 2021 Click Here for more Armstrong Flooring Charts.