OWLT Sandbridge Aquisition Corp

Filed pursuant to Rule 424(b)(3)

Registration Statement No. 333-258506

Prospectus Supplement No. 4

(To Prospectus dated August 24, 2021)

OWLET, INC.

This prospectus supplement updates, amends and supplements the prospectus dated August 24, 2021 (the “Prospectus”), which forms a part of our Registration Statement on Form S-1 (Registration No. 333-258506). Capitalized terms used in this prospectus supplement and not otherwise defined herein have the meanings specified in the Prospectus.

This prospectus supplement is being filed to update, amend and supplement the information included in the Prospectus with the information contained in our Current Report on Form 8-K filed with the SEC on February 16, 2022, which is set forth below.

This prospectus supplement is not complete without the Prospectus. This prospectus supplement should be read in conjunction with the Prospectus, which is to be delivered with this prospectus supplement, and is qualified by reference thereto, except to the extent that the information in this prospectus supplement updates or supersedes the information contained in the Prospectus. Please keep this prospectus supplement with your Prospectus for future reference.

Owlet, Inc.’s common stock and warrants are listed on the New York Stock Exchange under the symbols “OWLT” and “OWLT WS.” On February 15, 2022, the closing price of our common stock was $1.83 and the closing price of our warrants was $0.29.

We are an “emerging growth company” under federal securities laws and are subject to reduced public company reporting requirements. Investing in our securities involves certain risks. See “Risk Factors” beginning on page 6 of the Prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if the Prospectus or this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is February 16, 2022.

UNITED STATES

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 of Report (Date of earliest event reported): February 10, 2022

(844) 334-5330

(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:

Indicate by check mark whether 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-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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. ☐

On February 10, 2022, the Board of Directors of Owlet, Inc. (the “Company”) appointed Nathaniel Yoo, the Company’s Chief Accounting Officer, to serve as the Company’s principal accounting officer, effective immediately. Mr. Yoo will retain the title of Chief Accounting Officer.

Prior to joining the Company, from April 2020 to January 2022, Mr. Yoo, age 37, served as the Vice-President and Assistant Controller at Mattel, Inc. (“Mattel”), a global children’s entertainment company that specializes in the design and production of toys and consumer products. During the period from July 2017 to April 2020, Mr. Yoo served as Mattel’s Director of Finance and SEC Reporting and then as its Senior Director of Finance and SEC Reporting. Prior to joining Mattel, from July 2012 to July 2017, Mr. Yoo served at PricewaterhouseCoopers LLP in the Capital Markets and Accounting Advisory Services practice where he advised a variety of private and public companies on capital market transactions and financial reporting and accounting matters. Mr. Yoo holds a B.A. in Economics-Accounting from Claremont McKenna College and an M.B.A. from the Kellogg School of Management at Northwestern University. Mr. Yoo is a Certified Public Accountant in the state of California.

In connection with his service as principal accounting officer, Mr. Yoo is entitled to receive: (i) an initial base salary of $295,000; (ii) a signing bonus of $50,000 payable after completion of 90 days of service; and (iii) an annual performance bonus targeted at 30% of his then-current annual base salary based on achievement of company goals.

Mr. Yoo was granted, effective February 15, 2022 (the “Grant Date”), under the Company’s 2021 Incentive Award Plan an option to purchase 79,909 shares of the Company’s common stock (the “Option”) and 239,726 restricted stock units (“RSUs,” and such award, the “RSU Award”). The Option vests and becomes exercisable as to 25% of the shares subject to the Option, on the first anniversary of January 10, 2022 and, as to 1/36^th of the remaining 75% of the shares subject to the Option, in equal monthly installments thereafter (subject to Mr. Yoo’s continued employment through the applicable vesting date). The RSU Award vests as to 25% of the RSUs on the first anniversary of the Grant Date and, as to 1/12^th of the remaining 75% of the RSUs, in equal quarterly installments thereafter (subject to Mr. Yoo’s continued employment through the applicable vesting date).

Mr. Yoo has entered into the Company’s standard form indemnification agreement.