Sec Form 4 Filing - DAHLBERG KATHLEEN @ GLATFELTER P H CO - 2020-05-07

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person DAHLBERG KATHLEEN 2. Issuer Name and Ticker or Trading Symbol GLATFELTER P H CO [ GLT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 96 SOUTH GEORGE STREET, SUITE 500 3. Date of Earliest Transaction (MM/DD/YY) 05/07/2020 (Street) YORK, PA17401 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, Par Value $.01 05/09/2020 M 7,592 A $ 14.9 ( 1 ) 74,805 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 2 ) 05/09/2020 A 239 ( 3 ) 05/09/2020 05/09/2020 Common Stock, Par Value $.01 239 ( 4 ) 7,592 D Restricted Stock Units ( 2 ) 05/09/2020 M 7,592 05/09/2020 05/09/2020 Common Stock, Par Value $.01 7,592 ( 1 ) 0 D Restricted Stock Units ( 2 ) 05/07/2020 A 8,128 05/07/2021 05/07/2021 Common Stock, Par Value $.01 8,128 $ 0 8,128 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other DAHLBERG KATHLEEN 96 SOUTH GEORGE STREET SUITE 500 YORK, PA17401 X Signatures /s/ Jill L. Urey by POA 05/11/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Because the vesting occurred on a Saturday, the closing price on Friday, May 8, 2020 was applied. ( 2 )Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date. ( 3 )These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the May 9, 2019 RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout. ( 4 )Not applicable to this transaction

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).

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