6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

For the month of December 2018 (third filing)

Commission File Number: 0-49888

Randgold Resources Limited

(Translation of registrant’s name into English)

3rd Floor, Unity Chambers, 28 Halkett Street, St Helier, Jersey JE2 4WJ, Channel Islands

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's “home country”), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

Attached to the Registrant’s Form 6-K filing for the month of December 2018, and incorporated by reference herein, is:

Exhibit No.	Description
99.1	Release, dated December 20, 2018 entitled “TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES.”
99.2	Release, dated December 20, 2018 entitled “VESTING OF DIRECTORS’ AWARDS UNDER THE RANDGOLD RESOURCES LIMITED CO-INVESTMENT PLAN AND THE RANDGOLD RESOURCES LIMITED RESTRICTED SHARE SCHEME.”

SIGNATURES

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, thereunto duly authorized.

	RANDGOLD RESOURCES LIMITED
	By:	/s/ Martin Welsh*
		Martin Welsh
		General Counsel and Secretary
Dated:  December 21, 2018

*This filing has been signed by the undersigned Attorney-in-Fact pursuant to the power of attorney filed heretofore.

/s/ Manuel G. R. Rivera

Manuel G. R. Rivera

Attorney-in-Fact

EX-99.1

Exhibit 99.1

RANDGOLD RESOURCES LIMITED

Incorporated in Jersey, Channel Islands

Reg. No. 62686

LSE Trading Symbol: RRS

NASDAQ Trading Symbol: GOLD

("Randgold Resources" or the "Company")

Jersey, Channel Islands, 20 December 2018

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible)i
1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedii:	Randgold Resources Limited

1b. Please indicate if the issuer is a non-UK issuer  (please mark with an “X” if appropriate)
Non-UK issuer	x
2. Reason for the notification (please mark the appropriate box or boxes with an “X”)
An acquisition or disposal of voting rights
An acquisition or disposal of financial instruments	x
An event changing the breakdown of voting rights
Other (please specify)iii:

3. Details of person subject to the notification obligationiv
Name	BlackRock, Inc.
City and country of registered office (if applicable)	Wilmington, DE, USA
4. Full name of shareholder(s) (if different from 3.)v
Name
City and country of registered office (if applicable)
5. Date on which the threshold was crossed or reachedvi:	18/12/2018
6. Date on which issuer notified (DD/MM/YYYY):	19/12/2018
7. Total positions of person(s) subject to the notification obligation

	% of voting rights attached to shares (total of 8. A)	% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)	Total of both in % (8.A + 8.B)	Total number of voting rights of issuervii
Resulting situation on the date on which threshold was crossed or reached	6.94%	9.77%	16.71%	95,246,378
Position of previous notification (if applicable)	6.03%	10.57%	16.60%

8. Notified details of the resulting situation on the date on which the threshold was crossed or reachedviii
A: Voting rights attached to shares
Class/type of shares ISIN code (if possible)	Number of voting rightsix		% of voting rights
	Direct (Art 9 of Directive 2004/109/EC) (DTR5.1)	Indirect (Art 10 of Directive 2004/109/EC) (DTR5.2.1)	Direct (Art 9 of Directive 2004/109/EC) (DTR5.1)	Indirect (Art 10 of Directive 2004/109/EC) (DTR5.2.1)
GB00B01C3S32		6,613,556		6.94%

SUBTOTAL 8. A 6,613,556 6.94%

B 1: Financial Instruments according to Art. 13(1)(a) of Directive 2004/109/EC (DTR5.3.1.1 (a))
Type of financial instrument	Expiration datex	Exercise/ Conversion Periodxi	Number of voting rights that may be acquired if the instrument is exercised/converted.	% of voting rights
Securities Lending			615,497	0.64%
American Depository Receipt			8,691,048	9.12%
		SUBTOTAL 8. B 1	9,306,545	9.77%

B 2: Financial Instruments with similar economic effect according to Art. 13(1)(b) of Directive 2004/109/EC (DTR5.3.1.1 (b))
Type of financial instrument	Expiration datex	Exercise/ Conversion Period xi	Physical or cash settlementxii	Number of voting rights	% of voting rights
			SUBTOTAL 8.B.2

9. Information in relation to the person subject to the notification obligation (please mark the applicable box with an “X”)
Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuerxiii
Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entityxiv (please add additional rows as necessary)	x

Namexv	% of voting rights if it equals or is higher than the notifiable threshold	% of voting rights through financial instruments if it equals or is higher than the notifiable threshold	Total of both if it equals or is higher than the notifiable threshold
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Holdco 4, LLC
BlackRock Holdco 6, LLC
BlackRock Delaware Holdings Inc.
BlackRock Fund Advisors
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Capital Holdings, Inc.
BlackRock Advisors, LLC
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock (Singapore) Holdco Pte. Ltd.
BlackRock HK Holdco Limited
BlackRock Lux Finco S.a.r.l.
BlackRock Trident Holding Company Limited
BlackRock Japan Holdings GK
BlackRock Japan Co., Ltd.
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Holdco 3, LLC
BlackRock Cayman 1 LP
BlackRock Cayman West Bay Finco Limited
BlackRock Cayman West Bay IV Limited
BlackRock Group Limited
BlackRock Finance Europe Limited
BlackRock Investment Management (UK) Limited	1.92%	8.11%	10.04%
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock Holdco 4, LLC
BlackRock Holdco 6, LLC
BlackRock Delaware Holdings Inc.
BlackRock Institutional Trust Company, National Association
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.
BlackRock Australia Holdco Pty. Ltd.
BlackRock Investment Management (Australia) Limited
BlackRock, Inc.
BlackRock Holdco 2, Inc.
BlackRock Financial Management, Inc.
BlackRock International Holdings, Inc.
BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC

BlackRock Cayman 1 LP

BlackRock Cayman West Bay Finco Limited

BlackRock Cayman West Bay IV Limited

BlackRock Group Limited

BlackRock Finance Europe Limited

BlackRock Advisors (UK) Limited

BlackRock, Inc.

Trident Merger, LLC

BlackRock Investment Management, LLC

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock (Singapore) Holdco Pte. Ltd.

BlackRock HK Holdco Limited

BlackRock Asset Management North Asia Limited

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC

BlackRock Canada Holdings LP

BlackRock Canada Holdings ULC

BlackRock Asset Management Canada Limited

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC

BlackRock Cayman 1 LP

BlackRock Cayman West Bay Finco Limited

BlackRock Cayman West Bay IV Limited

BlackRock Group Limited

BlackRock Finance Europe Limited

BlackRock Investment Management (UK) Limited

BlackRock Asset Management Deutschland AG

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC

BlackRock Cayman 1 LP

BlackRock Cayman West Bay Finco Limited

BlackRock Cayman West Bay IV Limited

BlackRock Group Limited

BlackRock International Limited

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock (Singapore) Holdco Pte. Ltd.

BlackRock (Singapore) Limited

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

BlackRock International Holdings, Inc.

BR Jersey International Holdings L.P.

BlackRock Holdco 3, LLC

BlackRock Cayman 1 LP

BlackRock Cayman West Bay Finco Limited

BlackRock Cayman West Bay IV Limited

BlackRock Group Limited

BlackRock Finance Europe Limited

BlackRock (Netherlands) B.V.

BlackRock, Inc.

BlackRock Holdco 2, Inc.

BlackRock Financial Management, Inc.

10. In case of proxy voting, please identify:

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

11. Additional information^xvi

BlackRock Regulatory Threshold Reporting Team James Michael 020 7743 3650
Place of completion	12 Throgmorton Avenue, London, EC2N 2DL, U.K.
Date of completion	19 December, 2018

RANDGOLD RESOURCES ENQUIRIES:

Chief Executive	Financial Director	Investor & Media Relations
Mark Bristow	Graham Shuttleworth	Kathy du Plessis
+44 788 071 1386	+44 1534 735 333	+44 20 7557 7738
+44 779 775 2288	+44 779 771 1338	Email: randgold@dpapr.com

EX-99.2

Exhibit 99.2

RANDGOLD RESOURCES LIMITED

Incorporated in Jersey, Channel Islands

Reg. No. 62686

LSE Trading Symbol: RRS

NASDAQ Trading Symbol: GOLD

("Randgold Resources" or the "Company")

VESTING OF DIRECTORS’ AWARDS UNDER THE RANDGOLD RESOURCES LIMITED CO-INVESTMENT PLAN AND THE RANDGOLD RESOURCES LIMITED RESTRICTED SHARE SCHEME

Jersey, Channel Islands, 20 December 2018

Randgold Resources Limited Co-investment Plan

The Company announces that in respect of awards of 51,602 ordinary shares and 10,095 ordinary shares granted on 17 March 2017 (CIP Awards) to Mark Bristow and Graham Shuttleworth respectively, each a director of the Company, under the Randgold Resources Limited Co-Investment Plan (CIP), the vesting date of the CIP Awards was 17 December 2018, the expiry of the performance period applicable to the CIP Awards having been accelerated to 17 December 2018 as a result of the sanction by the Jersey Court of the scheme of arrangement (the Scheme) to effect the share-for-share merger with Barrick Gold Corporation (Barrick).

The CIP Awards are subject to a performance condition which measures the Company's total shareholder return performance against the Euromoney Global Gold Index. The performance condition was met in part. Accordingly, the CIP Awards have partially vested, and on 18 December 2018, 29,004 ordinary shares were issued and allotted by the Company to Mark Bristow and 5,674 ordinary shares were issued and allotted by the Company to Graham Shuttleworth, at their nominal value (US$0.05).

The unvested portions of the CIP Awards have lapsed in accordance with the rules of the CIP. The ordinary shares issued to Mark Bristow and Graham Shuttleworth, which will convert to common shares of Barrick when the Scheme becomes effective on 1 January 2019, are subject to a retention period of two years from the effectiveness of the Scheme, which is expected to expire on 2 January 2021.

Randgold Resources Limited Restricted Share Scheme

2015 Awards

The Company announces that in respect of awards of 44,619 ordinary shares and 11,162 ordinary shares, granted on 12 May 2015 (2015 Awards) to Mark Bristow and to Graham Shuttleworth respectively under the Randgold Resources Limited Restricted Share Scheme (the RSS), the vesting date of the 2015 Awards was 17 December 2018, the expiry of the performance period applicable to the 2015 Awards having been accelerated to 17 December 2018.

The 2015 Awards are subject to performance conditions which measure total cash cost per ounce, total relative shareholder return and additional reserves including reserve replacement. The performance conditions were met in part. Accordingly, the 2015 Awards have partially vested, and on 18 December 2018, 19,346 ordinary shares were issued and allotted by the Company to Mark Bristow and 4,840 ordinary shares were issued and allotted by the Company to Graham Shuttleworth, at their nominal value (US$0.05).

The outstanding unvested 2015 Awards have lapsed in accordance with the rules of the RSS. The ordinary shares issued to Mark Bristow and Graham Shuttleworth are subject to a retention period of two years from the date of vesting, which is expected to expire on 2 January 2021.

2016 Awards

The Company announces that in respect of awards of 36,380 ordinary shares and 8,284 ordinary shares, each in the Company granted on 23 March 2016 (2016 Awards) to Mark Bristow and to Graham Shuttleworth, respectively, under the RSS, the vesting date of the 2016 Awards was 17 December 2018, the expiry of the performance period applicable to the 2016 Awards having been accelerated to 17 December 2018.

The 2016 Awards are subject to performance conditions which measure total cash cost per ounce, total relative shareholder return and additional reserves including reserve replacement. The performance conditions were met in part and time proration was applied as a result of the accelerated vesting of the 2016 Awards. Accordingly, the 2016 Awards have partially vested and on 18 December 2018, 3,822 ordinary shares were issued and allotted by the Company to Mark Bristow and 870 ordinary shares were issued and allotted by the Company to Graham Shuttleworth, at their nominal value (US$0.05).

The portion of the outstanding 2016 Awards that did not vest as a result of the application of time proration will be assumed by Barrick and will continue to vest in the ordinary course and will be settled in Barrick shares (using the merger exchange ratio) on the applicable vesting dates. The remaining unvested 2016 Awards have lapsed in accordance with the rules of the RSS. The ordinary shares issued to Mark Bristow and Graham Shuttleworth are subject to a retention period of two years from the date of vesting, which is expected to expire on 2 January 2021.

2017 Awards

The Company announces that in respect of awards of 41,281 ordinary shares and 8,076 ordinary shares, each in the Company granted on 17 March 2017 (2017 Awards) to Mark Bristow and to Graham Shuttleworth, respectively, under the RSS, the vesting date of the 2017 Awards was 17 December 2018, the expiry of the performance period applicable to the 2017 Awards having been accelerated to 17 December 2018.

The 2017 Awards are subject to performance conditions which measure total cash cost per ounce, total relative shareholder return and additional reserves including reserve replacement. The performance conditions were met in part and time proration was applied as a result of the accelerated vesting of the 2017 Awards. Accordingly, the 2017 Awards have partially vested and on 18 December 2018, 10,665 ordinary shares were issued and allotted by the Company to Mark Bristow and 2,086 ordinary shares were issued and allotted by the Company to Graham Shuttleworth, at their nominal value (US$0.05).

1	Details of the person discharging managerial responsibilities/person closely associated
a)	Name	Mark Bristow
2	Reason for the notification
a)	Position/status	Chief Executive Officer and Executive Director
b)	Initial notification/Amendment	Initial notification
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	Randgold Resources Limited
b)	LEI	2138002TSG2FEQZOYH72
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument Identification code	Ordinary share of $0.05 in Randgold Resources Limited ISIN Code: GB00B01C3S32
b)	Nature of the transaction	Issuance of shares pursuant to the vesting of awards under the Randgold Resources Limited Restricted Share Scheme and Co-Investment Plan (the Company's employee share schemes)

c)	Price(s) and volume(s)	Price(s)	Volume(s)
		US$0.05	62,837

d)	Aggregated information	N/A
	- Aggregated volume
	- Price
e)	Date of the transaction	18 December 2018
f)	Place of the transaction	Outside a trading venue

The portion of the outstanding 2017 Awards that did not vest as a result of the application of time proration will be assumed by Barrick and will continue to vest in the ordinary course and will be settled in Barrick shares (using the merger exchange ratio) on the applicable vesting dates. The remaining unvested 2017 Awards have lapsed in accordance with the rules of the RSS. The ordinary shares issued to Mark Bristow and Graham Shuttleworth are subject to a retention period of two years from the date of vesting, which is expected to expire on 2 January 2021.

Shareholdings

Following the vesting of the CIP Awards and the RSS Awards, as described above, the respective shareholdings in the Company of Mark Bristow and Graham Shuttleworth are as follows:

Mark Bristow’s shareholding in the Company is 901,871 ordinary shares or 0.947% per cent of the current issued share capital of the Company.

Graham Shuttleworth's shareholding in the Company is 115,510 ordinary shares or 0.121% per cent of the current issued share capital of the Company.

In accordance with Article 19 of the EU Market Abuse Regulation, below are notifications by Mark Bristow and Graham Shuttleworth, as persons discharging managerial responsibilities, of the above transactions.

1	Details of the person discharging managerial responsibilities/person closely associated
a)	Name	Graham Shuttleworth
2	Reason for the notification
a)	Position/status	Chief Financial Officer and Executive Director
b)	Initial notification/Amendment	Initial notification
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	Randgold Resources Limited
b)	LEI	2138002TSG2FEQZOYH72
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument Identification code	Ordinary share of $0.05 in Randgold Resources Limited ISIN Code: GB00B01C3S32
b)	Nature of the transaction	Issuance of shares pursuant to the vesting of awards under the Randgold Resources Limited Restricted Share Scheme and Co-Investment Plan (the Company's employee share schemes)

c)	Price(s) and volume(s)	Price(s)	Volume(s)
		US$0.05	13,470

d)	Aggregated information
	- Aggregated volume	N/A
	- Price
e)	Date of the transaction	18 December 2018
f)	Place of the transaction	Outside a trading venue

RANDGOLD RESOURCES ENQUIRIES:

Chief Executive	Financial Director	Investor & Media Relations
Mark Bristow	Graham Shuttleworth	Kathy du Plessis
+44 788 071 1386	+44 1534 735 333	+44 20 7557 7738
+44 779 775 2288	+44 779 771 1338	Email: randgold@dpapr.com