<SUBMISSION>
<ACCESSION-NUMBER>0001515156-24-000047
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20240323
<FILING-DATE>20240326
<DATE-OF-FILING-DATE-CHANGE>20240326
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Hansen Stacia
<CIK>0001999392
<ORGANIZATION-NAME>
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-37822
<FILM-NUMBER>24784019
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>8051 E. MAPLEWOOD AVE.
<STREET2>STE 210
<CITY>GREENWOOD VILLAGE
<STATE>CO
<ZIP>80111
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Arq, Inc.
<CIK>0001515156
<ASSIGNED-SIC>2890
<ORGANIZATION-NAME>08 Industrial Applications and Services
<IRS-NUMBER>275472457
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>8051 E. MAPLEWOOD AVE., STE 210
<CITY>GREENWOOD VILLAGE
<STATE>CO
<ZIP>80111
<PHONE>720-598-3500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>8051 E. MAPLEWOOD AVE., STE 210
<CITY>GREENWOOD VILLAGE
<STATE>CO
<ZIP>80111
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Advanced Emissions Solutions, Inc.
<DATE-CHANGED>20110311
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1711484953.xml
<DESCRIPTION>FORM 4
<TEXT>
FORM 4                                                            OMB APPROVAL
? Check this box                                                  OMB Number:
if no longer                                                      3235-0287
subject to                                                        Estimated
Section 16. Form                                                  average burden
4 or Form 5                                                       hours per
obligations may                                                   response... 0.5
continue. See
Instruction
1(b).
? Check this box UNITED STATES SECURITIES AND EXCHANGE COMMISSION
to indicate that              Washington, D.C. 20549
a transaction    STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF
was made                            SECURITIES
pursuant to a
contract,
instruction or
written plan
that is intended
to satisfy the
affirmative
defense
conditions of
Rule 10b5-1(c).
See Instruction
10.
                      Filed pursuant to Section 16(a) of the
                 Securities Exchange Act of 1934 or Section 30(h)
                      of the Investment Company Act of 1940


1. Name and Address of Reporting  2. Issuer Name and Ticker  5. Relationship of
Person   *                        or Trading Symbol          Reporting Person(s) to
Hansen Stacia                     Arq, Inc. [ ARQ ]          Issuer (Check all
                                                             applicable)
                                                             _____
                                                             Director          _____
                                                             10% Owner
                                                             __X__ Officer (give title
(Last)      (First)      (Middle) 3. Date of Earliest        below)  _____ Other
C/O ARQ, INC., 8051 E. MAPLEWOOD  Transaction (MM/DD/YYYY)   (specify below)
AVE, STE 210                              3/23/2024          Chief Accounting Officer


            (Street)              4. If Amendment, Date      6. Individual or
GREENWOOD VILLAGE, CO 80111       Original Filed             Joint/Group Filing (Check
                                  (MM/DD/YYYY)               Applicable Line)
                                                             _X _ Form filed by One
                                                             Reporting Person
                                                             ___ Form filed by More
  (City)     (State)     (Zip)                               than One Reporting Person



                   Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security 2. Trans. Date 2A.       3. Trans.  4. Securities     5. Amount of   6. Ownership   7. Nature of
(Instr. 3)                         Deemed    Code       Acquired (A) or   Securities     Form: Direct   Indirect
                                   Execution (Instr. 8) Disposed of (D)   Beneficially   (D) or         Beneficial
                                   Date, if             (Instr. 3, 4 and  Owned          Indirect (I)   Ownership
                                   any                  5)                Following      (Instr. 4)     (Instr. 4)
                                                                          Reported
                                                                          Transaction(s)
                                                                          (Instr. 3 and
                                                               (A)        4)
                                                               or
                                              Code   V  Amount (D) Price
Common Stock          3/23/2024                F        4,865   D  $6.24         38,472        D


                           Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of     2.         3.       3A.       4. Trans.    5. Number of    6. Date Exercisable    7. Title and Amount of 8. Price   9. Number of   10.        11. Nature
Derivate        Conversion Trans.   Deemed    Code         Derivative      and Expiration Date    Securities Underlying  of         derivative     Ownership  of
Security        or         Date     Execution (Instr. 8)   Securities                             Derivative Security    Derivative Securities     Form of    Indirect
(Instr. 3)      Exercise            Date, if               Acquired (A) or                        (Instr. 3 and 4)       Security   Beneficially   Derivative Beneficial
                Price of            any                    Disposed of (D)                                               (Instr. 5) Owned          Security:  Ownership
                Derivative                                 (Instr. 3, 4                                                             Following      Direct (D) (Instr. 4)
                Security                                   and 5)                                                                   Reported       or
                                                                                                                                    Transaction(s) Indirect
                                                                           Date        Expiration             Amount or             (Instr. 4)     (I)
                                                                           Exercisable Date       Title       Number of                            (Instr. 4)
                                               Code    V     (A)     (D)                                      Shares



Explanation of Responses:



Reporting Owners
Reporting Owner Name / Address                   Relationships
                               Director 10% Owner Officer                  Other
Hansen Stacia
C/O ARQ, INC.                                     Chief Accounting Officer
8051 E. MAPLEWOOD AVE, STE 210
GREENWOOD VILLAGE, CO 80111



Signatures
/s/ Stacia Hansen                    3/26/2024
  **  Signature of Reporting Person    Date



Reminder: Report on a separate line for each class of securities beneficially owned
directly or indirectly.
*       If the form is filed by more than one reporting person, see Instruction
        4(b)(v).
**      Intentional misstatements or omissions of facts constitute Federal Criminal
        Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:   File three copies of this Form, one of which must be manually signed. If
        space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMB control number.
</TEXT>
</DOCUMENT>
</SUBMISSION>