UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. _1_)*

Tuffin Software Technologies Ltd.

(Name of Issuer)

Common Stock, $0.001 Par Value Per Share

(Title of Class of Securities)

M8893U102

(CUSIP Number)

December 20, 2019

(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

☒ Rule 13d-1(b)

☐ Rule 13d-1(c)

☐ Rule 13d-1(d)

*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 the disclosures provided in a prior cover page.

The information required in 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 13G

CUSIP No. M8893U102

1	Names of Reporting Persons
	ETF Managers Group LLC
2	Check the appropriate box if a member of a Group (see instructions)
	(a)  ☐ (b)  ☒ See Item of attached schedule
3	Sec Use Only
4	Citizenship or Place of Organization
	Delaware

Number of Shares Beneficially Owned by Each Reporting Person With:	5	Sole Voting Power
		1,710,525
	6	Shared Voting Power
	7	Sole Dispositive Power
		1,710,525
	8	Shared Dispositive Power

9	Aggregate Amount Beneficially Owned by Each Reporting Person
	1,710,525
10	Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
	☐
11	Percent of class represented by amount in row (9)
	4.91%
12	Type of Reporting Person (See Instructions)
	IA

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Item 1.

(a) Name of Issuer: Tuffin Software Technologies Ltd.

(b) Address of Issuer’s Principal Executive Offices: 5 Hashalom Road, Toha Tower, Tel Aviv 6789205

Item 2.

(a) Name of Person Filing: ETF Managers Group LLC

(b) Address of Principal Business Office or, if None, Residence:

ETF Managers Group LLC - 30 Maple Street, Suite 2, Summit, New Jersey 07091

(c) Citizenship: ETF Managers Group LLC – Delaware

(d) Title and Class of Securities: Common Stock

(e) CUSIP No.: M8893U102

Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a) ☐ Broker or dealer registered under Section 15 of the Act;

(b) ☐ Bank as defined in Section 3(a)(6) of the Act;

(c) ☐ Insurance company as defined in Section 3(a)(19) of the Act;

(d) ☐ Investment company registered under Section 8 of the Investment Company Act of 1940;

(e) ☒ An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

(f) ☐ An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);

(g) ☐ A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);

(h) ☐ A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) ☐ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940;

(j) ☐ A non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J);

(k) ☐ Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____

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Item 4. Ownership

(a) Amount Beneficially Owned: 1,710,525

(b) Percent of Class: 4.91%

(c) Number of shares as to which such person(s) has:

(i) Sole power to vote or to direct the vote: 1,710,525

(ii) Shared power to vote or to direct the vote:

(iii) Sole power to dispose or to direct the disposition of: 1,710,525

(iv) Shared power to dispose or to direct the disposition of:

Item 5. Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following ☒.

Item 6. Ownership of more than Five Percent on Behalf of Another Person.

The ETFMG Prime Cyber Security ETF, a series of the ETF Managers Trust, which is managed on a discretionary basis by ETF Managers Group LLC, has the right or the power to direct the receipt of dividends, or the proceeds from the sale of, the Common Stock.

Item 7. Identification and classification of the subsidiary which acquired the security being reported on by the parent holding company or control person.

Not Applicable

Item 8. Identification and classification of members of the group.

Not Applicable.

Item 9. Notice of Dissolution of Group.

Not Applicable

Item 10. Certifications.

By signing below, we certify that, to the best of our knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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SIGNATURE

After reasonable inquiry and to the best of our knowledge and belief, we certify that the information set forth in this statement is true, complete and correct.

Dated:  December 24, 2019

/s/ Reshma A. Tanczos

Name/Title:  Reshma A. Tanczos,
Chief Compliance Officer,
ETF Managers Group LLC

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