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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * LORENTZEN OIVIND   2. Issuer Name and Ticker or Trading Symbol SEACOR HOLDINGS INC /NEW/ [CKH] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) Vice Chairman (Last) (First) (Middle) C/O SEACOR HOLDINGS INC., 2200 ELLER DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 03/29/2019 (Street) FT. LAUDERDALE, FL 33316 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 03/29/2019   M   5,992 A $ 24.15 41,933 D   Common Stock 03/29/2019   S   5,992 D $ 42.5117 (1) 35,941 D   Common Stock               2,500 I CWHL Trust (2) Common Stock               2,500 I OHL Trust (2) Common Stock               2,500 I LBHL Trust (2) Common Stock               2,500 I THL Trust (2) Common Stock               2,500 I LHL Trust (2)

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 Options (right to buy)

$ 24.15 (3)

03/29/2019

M

5,992 (4)

(5)

05/13/2019

Common Stock

5,992

$ 24.15

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LORENTZEN OIVIND C/O SEACOR HOLDINGS INC. 2200 ELLER DRIVE FT. LAUDERDALE, FL 33316	X			Vice Chairman

Signatures

/s/ William C. Long, Attorney-in-Fact		04/01/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The price reported in Column 4 is a weighted average price. The Common Shares were sold in separate transactions on the same day at prices ranging from $42.50 to $42.71 per share. The Reporting Person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this footnote.
(2)	The shares of Common Stock reported herein as indirectly beneficially owned by the Reporting Person are held in a trust for the benefit of Reporting Person's child. The Reporting Person is not a trustee of the trust.
(3)	On June 2, 2017, the issuer completed the spin-off of SEACOR Marine Holdings Inc. (the "SMHI Spin-Off"), in which the issuer distributed all shares of SMHI to the issuer's stockholders. The completion of the SMHI Spin-off resulted in an adjustment to the exercise price of these options from $40.14 to $25.90. On December 20, 2017, the issuer paid a dividend to its stockholders consisting of a portion of the issuer's shares of Dorian LPG Ltd., which resulted in a further adjustment to the exercise price of these options from $25.90 to $24.15.
(4)	On June 2, 2017, in connection with the SMHI Spin-Off, these options were adjusted, resulting in the reporting person's ownership of 2,126 additional stock options.
(5)	These options became exercisable on May 13, 2010.

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