UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE TO

Tender Offer Statement Under Section 14(d)(1) or 13(e)(1)

of the Securities Exchange Act of 1934

CARBON BLACK, INC.

(Issuer)

(Name of Subject Company)

CALISTOGA MERGER CORP.

(Offeror)

(Names of Filing Persons)

VMWARE, INC.

(Parent of Offeror)

(Names of Filing Persons)

Common stock, par value $0.001 per share

(Title of Class of Securities)

14081R103

(CUSIP Number of Class of Securities)

Patrick Gelsinger

Chief Executive Officer

VMware, Inc.

3401 Hillview Avenue

Palo Alto, CA

(650) 427-5000

(Name, address and telephone numbers of person authorized to receive notices and communications on behalf of filing persons)

With a copy to:

Brandon Parris, Esq.

Alexa Belonick, Esq.

Morrison & Foerster LLP

425 Market Street

San Francisco, CA 94105-2482

(415) 268-7000

CALCULATION OF FILING FEE

Transaction Valuation*	Amount of Filing Fee*
N/A	N/A

* A filing fee is not required in connection with this filing as it relates solely to preliminary communications made before the commencement of the tender offer.

☐  Check box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.

Amount Previously Paid: N/A	Filing Party: N/A
Form or Registration No: N/A	Date Filed: N/A

☒  Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the statement relates:

☒  third-party tender offer subject to Rule 14d-1.

☐  issuer tender offer subject to Rule 13e-4.

☐  going-private transaction subject to Rule 13e-3.

☐  amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results of the tender offer:  ☐

If applicable, check the appropriate box(es) below to designate the appropriate rule provision(s) relied upon:

☐  Rule 13e-4(i) (Cross-Border Issuer Tender Offer)

☐  Rule 14d-1(d) (Cross-Border Third-Party Tender Offer)

This Tender Offer Statement on Schedule TO relates solely to preliminary communications made before the commencement of a planned tender offer by Calistoga Merger Corp., a Delaware corporation (“Purchaser”) and a wholly owned subsidiary of VMware, Inc., a Delaware corporation (“VMware”), to acquire all of the outstanding shares of common stock of Carbon Black, Inc., a Delaware corporation (“Carbon Black”), at a price of $26.00 per share, net to the seller in cash, without interest, subject to any required withholding of taxes, pursuant to an Agreement and Plan of Merger, dated as of August 22, 2019, by and among Purchaser, VMware and Carbon Black.

Additional Information and Where to Find It

The tender offer referenced in this communication has not yet commenced. This communication is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell Carbon Black securities, nor is it a substitute for the tender offer materials that VMware and its acquisition subsidiary will file with the Securities and Exchange Commission (“SEC”). The solicitation and offer to buy Carbon Black stock will only be made pursuant to an Offer to Purchase and related tender offer materials. At the time the tender offer is commenced, VMware and its acquisition subsidiary will file a tender offer statement on Schedule TO and thereafter Carbon Black will file a Solicitation/Recommendation Statement on Schedule 14D-9 with the SEC with respect to the tender offer.

THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER TENDER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. CARBON BLACK STOCKHOLDERS ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS OF CARBON BLACK SECURITIES SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SECURITIES.

The Offer to Purchase, the related Letter of Transmittal and certain other tender offer documents, as well as the Solicitation/Recommendation Statement, will be made available to all holders of Carbon Black stock at no expense to them. The tender offer materials and the Solicitation/Recommendation Statement will be made available for free at the SEC’s website at www.sec.gov. Additional copies may be obtained for free by contacting VMware or Carbon Black. Copies of the documents filed with the SEC by Carbon Black will be available free of charge on Carbon Black internet website at investors.carbonblack.com/financial-information/sec-filings or by contacting Carbon Black’s Investor Relations Department at (617) 393-7400. Copies of the documents filed with the SEC by VMware will be available free of charge on VMware’s internet website at ir.vmware.com contacting VMware’s Investor Relations Department via email at IR@vmware.com.

In addition to the Offer to Purchase, the related Letter of Transmittal and certain other tender offer documents, as well as the Solicitation/Recommendation Statement, VMware and Carbon Black each file annual, quarterly and current reports and other information with the SEC. VMware’s and Carbon Black’s filings with the SEC are available to the public on the SEC’s website at www.sec.gov.

Forward-Looking Statements

This document contains forward-looking statements including, among other things, statements regarding the proposed acquisition of Carbon Black by VMware. These forward-looking statements are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from those projected in the forward-looking statements as a result of certain risk factors, including but not limited to: (1) the satisfaction or waiver of the conditions to closing the proposed acquisition (including the failure to obtain necessary regulatory approvals) in the anticipated timeframe or at all; (2) uncertainties as to how many of Carbon Black’s stockholders will tender their shares in the tender offer; (3) the possibility that the acquisition does not close; (4) the possibility that competing offers may be made; (5) risks related to obtaining the requisite consents to the acquisition, including, without limitation, the timing (including possible delays) and receipt of regulatory approvals from various governmental entities (including any conditions, limitations or restrictions placed on these approvals and the risk that one or more governmental entities may deny approval); (6) risks related to the ability to realize the anticipated benefits of the proposed acquisition, including the possibility that the expected benefits from the proposed acquisition will not be realized or will not be realized within the expected time period; (7) the risk that

the business will not be integrated successfully; (8) disruption from the transaction making it more difficult to maintain business and operational relationships; (9) negative effects of this announcement or the consummation of the proposed acquisition on the market price of VMware’s common stock, credit ratings and operating results; and (10) the risk of litigation and regulatory actions related to the proposed acquisitions. These forward-looking statements are made as of the date hereof, are based on current expectations and are subject to uncertainties and changes in condition, significance, value and effect as well as other risks detailed in documents filed with the SEC, including VMware’s most recent reports on Form 10-K and Form 10-Q and current reports on Form 8-K that VMware may file from time to time, which could cause actual results to vary from expectations. VMware assumes no obligation to, and does not currently intend to, update any such forward-looking statements after the date of this document.

EXHIBIT INDEX

Exhibit No.	Description
99.1	Customer Communication