Sec Form 4 Filing - Walker Byrom @ DELTIC TIMBER CORP - 2017-12-19

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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Walker Byrom 2. Issuer Name and Ticker or Trading Symbol DELTIC TIMBER CORP [ DEL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Interim VP, CFO; Controller (Last) (First) (Middle) 210 EAST ELM STREET 3. Date of Earliest Transaction (MM/DD/YY) 12/19/2017 (Street) EL DORADO, AR71730 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 12/19/2017 A 7,984 ( 1 ) A $ 0 10,979 D Common Stock 12/19/2017 M 690 ( 2 ) A $ 71.35 11,669 D Common Stock 12/19/2017 M 374 ( 2 ) A $ 63.21 12,043 D Common Stock 12/19/2017 M 494 ( 2 ) A $ 65.89 12,537 D Common Stock 12/19/2017 M 842 ( 2 ) A $ 55.94 13,379 D Common Stock 12/19/2017 M 736 ( 2 ) A $ 76.95 14,115 D Common Stock 12/19/2017 M 184 ( 2 ) A $ 78.88 14,299 D Common Stock 12/19/2017 M 1,587 ( 2 ) A $ 76.14 15,886 D Common Stock 12/19/2017 M 593 ( 2 ) A $ 90.69 16,479 D Common Stock 12/19/2017 S 5,500 ( 2 ) D $ 90.94 10,979 D Common Stock 3,310 I By Trustee of Company Thrift Plan

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 Stock Option ( 3 ) $ 71.35 12/19/2017 M 173 02/20/2014 02/20/2023 Common Stock 173 $ 0 0 D Stock Option ( 3 ) $ 71.35 12/19/2017 M 172 02/20/2015 02/20/2023 Common Stock 172 $ 0 0 D Stock Option ( 3 ) $ 71.35 12/19/2017 M 173 02/20/2016 02/20/2023 Common Stock 173 $ 0 0 D Stock Option ( 3 ) $ 71.35 12/19/2017 M 172 02/20/2017 02/20/2023 Common Stock 172 $ 0 0 D Stock Option ( 3 ) $ 63.21 12/19/2017 M 187 02/19/2017 02/19/2024 Common Stock 187 $ 0 0 D Stock Option ( 3 ) $ 63.21 12/19/2017 M 187 12/19/2017 02/19/2024 Common Stock 187 $ 0 0 D Stock Option ( 3 ) $ 65.89 12/19/2017 M 165 02/18/2017 02/18/2025 Common Stock 165 $ 0 0 D Stock Option ( 3 ) $ 65.89 12/19/2017 M 165 12/19/2017 02/18/2025 Common Stock 165 $ 0 0 D Stock Option ( 3 ) $ 65.89 12/19/2017 M 164 12/19/2017 02/18/2025 Common Stock 164 $ 0 0 D Stock Option ( 3 ) $ 55.94 12/19/2017 M 211 02/17/2017 02/17/2026 Common Stock 211 $ 0 0 D Stock Option ( 3 ) $ 55.94 12/19/2017 M 210 12/19/2017 02/17/2026 Common Stock 210 $ 0 0 D Stock Option ( 3 ) $ 55.94 12/19/2017 M 211 12/19/2017 02/17/2026 Common Stock 211 $ 0 0 D Stock Option ( 3 ) $ 55.94 12/19/2017 M 210 12/19/2017 02/17/2026 Common Stock 210 $ 0 0 D Stock Option ( 3 ) $ 76.95 12/19/2017 M 184 12/19/2017 02/15/2027 Common Stock 184 $ 0 0 D Stock Option ( 3 ) $ 76.95 12/19/2017 M 184 12/19/2017 02/15/2027 Common Stock 184 $ 0 0 D Stock Option ( 3 ) $ 76.95 12/19/2017 M 184 12/19/2017 02/15/2027 Common Stock 184 $ 0 0 D Stock Option ( 3 ) $ 76.95 12/19/2017 M 184 12/19/2017 02/15/2027 Common Stock 184 $ 0 0 D Stock Option ( 3 ) $ 78.88 12/19/2017 M 46 12/19/2017 03/01/2027 Common Stock 46 $ 0 0 D Stock Option ( 3 ) $ 78.88 12/19/2017 M 46 12/19/2017 03/01/2027 Common Stock 46 $ 0 0 D Stock Option ( 3 ) $ 78.88 12/19/2017 M 46 12/19/2017 03/01/2027 Common Stock 46 $ 0 0 D Stock Option ( 3 ) $ 78.88 12/19/2017 M 46 12/19/2017 03/01/2027 Common Stock 46 $ 0 0 D Stock Option ( 3 ) $ 76.14 12/19/2017 M 397 12/19/2017 08/28/2027 Common Stock 397 $ 0 0 D Stock Option ( 3 ) $ 76.14 12/19/2017 M 397 12/19/2017 08/28/2027 Common Stock 397 $ 0 0 D Stock Option ( 3 ) $ 76.14 12/19/2017 M 397 12/19/2017 08/28/2027 Common Stock 397 $ 0 0 D Stock Option ( 3 ) $ 76.14 12/19/2017 M 396 12/19/2017 08/28/2027 Common Stock 396 $ 0 0 D Stock Option ( 3 ) $ 90.69 12/19/2017 M 149 12/19/2017 10/25/2027 Common Stock 149 $ 0 0 D Stock Option ( 3 ) $ 90.69 12/19/2017 M 148 12/19/2017 10/25/2027 Common Stock 148 $ 0 0 D Stock Option ( 3 ) $ 90.69 12/19/2017 M 148 12/19/2017 10/25/2027 Common Stock 148 $ 0 0 D Stock Option ( 3 ) $ 90.69 12/19/2017 M 148 12/19/2017 10/25/2027 Common Stock 148 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Walker Byrom 210 EAST ELM STREET EL DORADO, AR71730 Interim VP, CFO; Controller Signatures Jim F. Andrews, Jr., Attorney-in-Fact for Byrom Walker 12/21/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Vesting of accelerated award of 2014, 2015, 2016 & 2017 Performance-Based restricted stock under 2002 SIP. ( 2 )Stock acquired and sold was pursuant to stock option exercise. ( 3 )Option under 2002 SIP and previously reported.

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 Number.