Exhibit 99.4
FORM OF
BROKER LETTER TO CLIENTS WHO ARE BENEFICIAL HOLDERS
OF BIOLASE, INC.
Subscription Rights to Purchase Units
Offered Pursuant to Subscription Rights Distributed to Stockholders
and Holders of June 2020 Warrants of BIOLASE, Inc.
July 2, 2020
To our Clients:
This letter is being distributed to our clients who are holders of BIOLASE, Inc. (the “Company”) common stock, $0.001 par value per share (the “Common Stock”) or of warrants issued in a private placement transaction that was consummated on June 10, 2020 (the “June 2020 Warrants”), as of 5:00 p.m., Eastern Time, on July 1, 2020, the record date, in connection with a distribution in a rights offering ofnon-transferable subscription rights to subscribe for and purchase units. Each unit entitles the holder to one share of the Company’s Series F Convertible Preferred Stock, $0.001 par value per share, and 2,500 warrants. Each warrant will be exercisable for one share of Common Stock. The subscription rights and units are described in the prospectus dated July 1, 2020 (a copy of which accompanies this notice).
Pursuant to the rights offering, the Company is issuing subscription rights to subscribe for up to 15,000 units on the terms and subject to the conditions described in the prospectus, at a subscription price of $1,000 per unit.
The subscription rights may be exercised at any time during the subscription period, which commences on July 2, 2020 and ends at 5:00 p.m., Eastern Time, on July 15, 2020, the expiration date, unless extended by the Company in its sole discretion.
As described in the prospectus, holders will receive one subscription right for every share of Common Stock owned on the record date (or in the case of the holders of the June 2020 Warrants for each share that the holders had the right to acquire on the record date pursuant to the exercise of the June 2020 Warrants), evidenced bynon-transferable subscription rights certificates. Each subscription right entitles the holder to purchase one unit at the subscription price, which we refer to as the basic subscription right.
Based on 50,342,130 shares of Common Stock outstanding as of July 1, 2020, and 10,800,000 shares of Common Stock issuable upon exercise of June 2020 Warrants, we would grant subscription rights to acquire 61,142,130 units but will only accept subscriptions for 15,000 units. Accordingly, sufficient units may not be available to honor your subscription in full. If exercises of basic subscription rights exceed the number of units available in the rights offering, we will allocate the available unitspro-rata among the record holders exercising the basic subscription rights in proportion to the number of shares of our Common Stock each of those record holders owned on the record date (including shares issuable upon exercise of June 2020 Warrants), relative to the number of shares owned on the record date by all record holders exercising the over-subscription privilege. If thispro-rata allocation results in any record holders receiving a greater number of units than the record holder subscribed for pursuant to the exercise of the basic subscription rights, then such record holder will be allocated only that number of units for which the record holder subscribed, and the remaining units will be allocated among all other record holders exercising their basic subscription rights on the same pro rata basis described above. The proration process will be repeated until all units have been allocated. If for any reason the amount of units allocated to you is less than you have subscribed for, then the excess funds held by the Subscription Agent on your behalf will be returned to you, without interest, as soon as practicable after the rights offering has expired and all prorating calculations and reductions contemplated by the terms of the rights offering have been effected, and we will have no further obligations to you.