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

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT ~~Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934~~

~~Date~~Pursuant ofto ~~report~~Section 13 ~~(Date~~OR ~~of earliest event reported~~15(d)~~: May~~ ~~30, 2018~~

~~KLONDEX MINES LTD. (Exact name~~ of ~~registrant~~the asSecurities ~~specified~~Exchange inAct ~~its~~of ~~charter)~~1934

Date of report (Date of earliest event reported): June 4, 2018

LOGO

KLONDEX MINES LTD.

(Exact name of registrant as specified in its charter)

British Columbia

001-37563

98-1153397

(State or other jurisdiction of

incorporation or organization)

(Commission

File Number)

(IRS Employer

Identification No.)

6110 Plumas Street, Suite A ~~Reno, Nevada 89519 (Address of Principal Executive Offices)~~

~~(775) 284-5757 (Registrant's telephone number~~Reno, ~~including~~Nevada ~~area~~89519 ~~code)~~

~~N/A~~ (~~Former Name or Former~~ Address, ~~if Changed~~of ~~Since~~Principal ~~Last~~Executive ~~Report~~Offices)

(775) 284-5757

(Registrant’s telephone number, including area code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (See General Instructions A.2 below):

[☒ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a -12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d -2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e -4(c))

~~Indicate~~☒ bySoliciting ~~check~~material ~~mark~~pursuant ~~whether~~to ~~the registrant is an emerging growth company as defined in~~ Rule ~~405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b~~14a-212 ofunder the ~~Securities~~ Exchange Act of(17 ~~1934~~CFR (§240.~~12b~~ 14a-~~2 of this chapter~~12).

~~Emerging~~☐ ~~growth~~Pre-commencement ~~company~~communications ~~[X]~~pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

If☐ anPre-commencement ~~emerging~~communications ~~growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided~~ pursuant to ~~Section~~ 13Rule 13e-4(ac) ofunder the Exchange Act. [(17 ]CFR 240.13e-4(c))

~~Item~~Indicate 7by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.01405 ~~Regulation~~of FDthis ~~Disclosure~~chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

On May 30, 2018, Klondex Mines Ltd. (the “Company”) filed a technical report concerning its True North mine titled “Technical Report for the True North Mine, Bissett, Manitoba, Canada” dated May 8, 2018, with an effective date of March 31, 2018 (the “Technical Report”) on SEDAR. The Technical Report is attached to this Current Report on Form 8-K as Exhibit 99.1. The format and content of the Technical Report were prepared in accordance with Form 43-101F1 of National Instrument 43-101 – Standards of Disclosure for Mineral Projects of the Canadian Securities Administrators (“NI 43-101”).


Emerging growth company		☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.		☐

InItem ~~accordance with General Instruction B~~1.201 ofEntry ~~Form~~into ~~8-K,~~a ~~the information~~Material ~~set~~Definitive ~~forth herein and in the Technical Report attached hereto as Exhibit 99~~Agreement.1 shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

AsOn ~~used~~June 4, ~~in the Technical Report~~2018, ~~the~~Klondex ~~terms~~Mines Ltd. (“~~mineral reserve~~Klondex,” “~~proven~~we”, ~~mineral reserve~~“us” ~~and~~or “~~probable~~our”), ~~mineral~~Hecla ~~reserve”~~Mining ~~are~~Company ~~Canadian~~(“Hecla”) ~~mining terms~~and as1156291 ~~defined~~B.C. inUnlimited ~~accordance~~Liability ~~with~~Company, NIa 43wholly-~~101~~owned ~~and~~subsidiary ~~the~~of ~~Canadian~~Hecla, ~~Institute~~amended ~~of Mining,~~that ~~Metallurgy~~certain ~~and~~Arrangement ~~Petroleum~~Agreement (~~CIM~~the “Amendment”)~~-CIM~~ ~~Definition~~by ~~Standards~~and onamong ~~Mineral Resources~~the ~~and~~parties ~~Mineral~~dated ~~Reserves~~March 16, ~~adopted~~2018, bywhich ~~the~~was ~~CIM~~filed ~~Council,~~ as ~~amended~~Exhibit 2.1 to Klondex’s Form 8-K filed March 19, 2018 (the “~~CIM Definition~~Arrangement ~~Standards~~Agreement”). Under ~~These~~the ~~definitions~~terms ~~differ~~of ~~from~~the Amendment, the ~~definitions~~Outside Date (as defined in the ~~U.S.~~ ~~Securities~~Arrangement ~~and~~Agreement) ~~Exchange~~is ~~Commission's~~changed ~~("SEC")~~from ~~Industry~~July 16, ~~Guide~~2018 7to ~~(“SEC Industry~~July 30, ~~Guide~~2018. ~~7”)~~The ~~under~~Amendment ~~the~~also ~~Exchange~~makes ~~Act.~~certain ~~The~~other ~~True~~immaterial ~~North~~changes ~~mine~~to ~~does~~the ~~not~~Plan ~~currently~~of ~~have~~Arrangement ~~known reserves,~~included as ~~defined~~a schedule ~~under~~to ~~SEC~~the ~~Industry~~Arrangement ~~Guide 7~~Agreement.

The ~~terms~~foregoing ~~“mineral~~description ~~resource,”~~of ~~“measured~~the ~~mineral~~Amendment ~~resource,” “indicated~~does ~~mineral~~not ~~resource”~~purport ~~and “inferred mineral resource” are defined in, and required~~ to be ~~disclosed~~complete ~~by NI 43-101; however, these terms are not defined terms under SEC Industry Guide 7~~ and ~~are~~is ~~normally~~qualified ~~not permitted to be used~~ in ~~reports~~ ~~and~~its ~~registration~~entirety ~~statements~~by ~~filed with~~ the ~~SEC. Investors are cautioned~~ ~~not~~full totext ~~assume that all or any part~~ of athe ~~mineral~~Amendment, ~~deposit in these categories will ever be converted into reserves. An “inferred mineral resource” has~~ a ~~lower level~~copy of ~~confidence~~which ~~than that applying to an “indicated mineral resource” and must not be converted to a mineral “reserve”. It~~ is ~~reasonably~~attached ~~expected~~hereto ~~that~~as ~~the majority~~Exhibit ~~of “inferred mineral resources” could be upgraded to “indicated mineral resources” with continued exploration~~2.1 ~~Under~~and ~~Canadian~~incorporated ~~rules,~~herein ~~estimates~~by ~~of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies, except in rare cases~~reference.

~~Disclosure~~Cautionary ofStatement ~~“contained ounces” in a resource is permitted~~Regarding ~~disclosure~~Forward-Looking ~~under~~Statements Canadian regulations; however, the SEC normally only permits issuers to report in place tonnage and grade without reference to unit measures for mineralization that does not constitute “reserves” by SEC standards. Accordingly, information contained in the Technical Report contain descriptions of the Company’s mineral deposits that may not be comparable to similar information made public by U.S. companies subject to the reporting and disclosure requirements under the United States federal securities laws and the rules and regulations thereunder.

~~The~~Certain ~~term~~statements ~~“mineralized~~in ~~material”~~this asCurrent ~~used~~Report inon Form 8-K and the ~~Technical~~exhibits attached ~~Report~~hereto constitute forward-looking statements within the meaning of United States securities laws and forward-looking information within the meaning of Canadian securities laws (collectively, ~~although~~“forward-looking ~~permissible~~statements”). ~~under~~Any ~~SEC~~statements that ~~Industry~~express ~~Guide~~or 7involve discussions with respect to predictions, ~~does~~expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not ~~indicate~~always, identified by words or phrases such as “expects”, “~~reserves~~is expected”, by“anticipates”, ~~SEC~~“believes”, ~~Industry~~“plans”, ~~Guide~~“projects”, 7“estimates”, ~~standards.~~“assumes”, ~~The~~“intends”, ~~Company~~“strategy”, ~~cannot~~“goals”, be“objectives”, “potential”, ~~certain~~“possible” or variations thereof or stating that ~~any~~ ~~part~~certain ofactions, ~~the~~events, ~~mineralized~~conditions ~~material~~or results “may”, “could”, “would”, “should”, “might” or “will” ~~ever~~be taken, occur or be ~~confirmed~~achieved, or ~~converted~~the ~~into~~negative of any of these terms and similar expressions) are not statements of historical fact and may be forward-looking statements. Our forward-looking statements involve risks and uncertainties that may cause ~~SEC~~our ~~Industry~~actual ~~Guide~~results 7to ~~compliant~~materially ~~“reserves”~~differ from such forward-looking statements. ~~Investors~~These ~~are~~risks ~~cautioned~~and ~~not~~uncertainties include the occurrence of any event that could give rise to ~~assume~~the termination of the proposed transaction; the failure to obtain the required ~~that~~shareholder ~~all~~approval or ~~any~~required ~~part~~regulatory clearance for the proposed transaction; and failure to satisfy other conditions to consummating the proposed transaction. Our forward-looking statements are based on the beliefs, expectations and opinions of management as of the ~~mineralized~~date ~~material~~the ~~will~~statements ~~ever~~were bemade. ~~confirmed~~We do not assume any obligation to update our forward-looking statements if circumstances or ~~converted~~ ~~into~~management’s ~~reserves~~beliefs, expectations or ~~that~~opinions ~~mineralized~~should ~~material~~change, ~~can~~except beas ~~economically~~required orby law. For the ~~legally~~reasons ~~extracted~~set forth above, investors should not place undue reliance on our forward-looking statements.

~~Item~~Important ~~9.01~~Additional ~~Financial~~Information ~~Statements~~ and ~~Exhibits.~~Where to Find It

In connection with the transaction contemplated under the Arrangement Agreement (dthe “Proposed Transaction”), ~~The~~Klondex ~~following~~has ~~exhibit~~filed isa preliminary ~~being~~proxy statement regarding the Proposed Transaction with the SEC and, once finalized, will file the final proxy statement with the SEC and mail or otherwise provide it to its shareholders. BEFORE MAKING ANY VOTING DECISION, KLONDEX’S SHAREHOLDERS ARE URGED TO CAREFULLY READ THE FINAL PROXY STATEMENT IN ITS ENTIRETY WHEN IT BECOMES AVAILABLE AND ANY OTHER DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED TRANSACTION OR INCORPORATED BY REFERENCE THEREIN BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND THE PARTIES TO THE PROPOSED TRANSACTION. Investors and security holders may obtain a free copy of the preliminary and final proxy statement and other documents that Klondex files with the SEC (when available) from the SEC’s website at www.sec.gov and Klondex’s website at www.klondexmines.com. In addition, the preliminary and final proxy statement and other documents filed ~~herewith~~by Klondex with the SEC (when available) may be obtained from Klondex free of charge by directing a request to Mike Beckstead, Director, Investor Relations, Klondex Mines Ltd., 6110 Plumas Street, Suite A, Reno, Nevada, USA 89519, Phone: 775-284-5757.

Exhibit	Description
99.1	Technical Report for the True North Mine, Bissett, Manitoba, Canada

None of the Hecla Shares and/or Spinco Shares to be issued pursuant to the Arrangement Agreement have been or will be registered under the Securities Act, or any state securities laws, and such securities are anticipated to be issued in reliance upon the exemption from such registration requirements afforded by Section 3(a)(10) of the Securities Act and applicable exemptions under state securities laws. This document does not constitute an offer to sell or the solicitation of an offer to buy any securities.

~~SIGNATURE~~Certain Participants in the Solicitation

~~Pursuant~~Klondex, Klondex’s directors and certain of Klondex’s executive officers and employees may be deemed, under SEC rules, to be participants in the solicitation ~~requirements~~of proxies from Klondex’s shareholders with respect to shareholder approval of the ~~Securities~~Proposed ~~Exchange~~Transaction. ~~Act~~Information regarding the names of ~~1934~~Klondex’s directors and executive officers and their respective interests in Klondex by security holdings or otherwise is set forth in Klondex’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017 filed with the ~~registrant~~ ~~has~~SEC ~~duly~~on ~~caused~~March 14, ~~this~~2018, ~~report~~as toamended beby ~~signed~~Amendment No. 1 on Form 10-K/A filed on April 30, 2018, and Klondex’s definitive proxy statement for its ~~behalf~~2017 byAnnual and Special Meeting of Shareholders filed with the SEC on April 11, 2017. ~~undersigned~~Additional information regarding the interests of such individuals in the Proposed Transaction is included in the preliminary proxy statement filed on May 23, ~~hereunto~~2018 ~~duly~~and ~~authorized~~will also be included in the final proxy statement relating to such Proposed Transaction when it is filed with the SEC. These documents may be obtained free of charge from the SEC’s website at www.sec.gov and Klondex’s website at www.klondexmines.com.

	KLONDEX MINES LTD.
Date: May 30, 2018	By: /s/ Barry Dahl
	Name: Barry Dahl
	Title: Chief Financial Officer

Item 9.01

Financial Statements and Exhibits.

(d) The following exhibit is being filed herewith:


Exhibit		Description

2.1		Amending Agreement dated June 4, 2018

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

KLONDEX MINES LTD.

Date: June 4, 2018

/s/ Barry Dahl

Barry Dahl

Chief Financial Officer

Filing Compare · Klondex Mines Unlimited Liability Co