Check the appropriate box to designate
the rule pursuant to which this Schedule is filed:
*The remainder of this cover page shall
be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for
any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.
The information required in the remainder
of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of
1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions
of the Act (however, see the Notes).
CUSIP No. 76152G100
|
13G/A |
Page 2 of 8 Pages |
1 |
NameS
of Reporting Persons
I.R.S. Identification NOS. of Above Persons (ENTITIES ONLY)
TANG
CAPITAL PARTNERS, LP
|
2 |
Check
the Appropriate Box if a Member of a Group* |
(a) ¨
(b) ý |
3 |
SEC Use Only
|
4 |
Citizenship
or Place of Organization
DELAWARE
|
Number
of
Shares
BENEFICIALLY
Owned by
Each
Reporting
Person with
|
5 |
Sole
Voting Power
0
|
6 |
Shared
Voting Power
2,266,229
|
7 |
Sole
Dispositive Power
0
|
8 |
Shared
Dispositive Power
2,266,229
|
9 |
Aggregate
Amount Beneficially Owned by each Reporting Person
2,266,229
|
10 |
Check
Box if the Aggregate Amount in Row (9) excludes certain shares
¨
|
11 |
Percent
of Class represented by amount in row 9
9.99%
|
12 |
type
of reporting person
pN
|
CUSIP No. 76152G100
|
13G/A |
Page 3 of 8 Pages |
1 |
NameS
of Reporting Persons
I.R.S. Identification NOS. of Above Persons (ENTITIES ONLY)
TANG CAPITAL MANAGEMENT, LLC
|
2 |
Check
the Appropriate Box if a Member of a Group* |
(a) ¨
(b) ý |
3 |
SEC Use Only
|
4 |
Citizenship
or Place of Organization
DELAWARE
|
Number
of
Shares
BENEFICIALLY
Owned by
Each
Reporting
Person with
|
5 |
Sole
Voting Power
0
|
6 |
Shared
Voting Power
2,266,229
|
7 |
Sole
Dispositive Power
0
|
8 |
Shared
Dispositive Power
2,266,229
|
9 |
Aggregate
Amount Beneficially Owned by each Reporting Person
2,266,229
|
10 |
Check
Box if the Aggregate Amount in Row (9) excludes certain shares
¨
|
11 |
Percent
of Class represented by amount in row 9
9.99%
|
12 |
type
of reporting person
oo
|
CUSIP No. 76152G100
|
13G/A |
Page 4 of 8 Pages |
1 |
NameS
of Reporting Persons
I.R.S. Identification NOS. of Above Persons (ENTITIES ONLY)
KEVIN TANG
|
2 |
Check
the Appropriate Box if a Member of a Group* |
(a) ¨
(b) ý |
3 |
SEC Use Only
|
4 |
Citizenship
or Place of Organization
UNITED STATES
|
Number
of
Shares
BENEFICIALLY
Owned by
Each
Reporting
Person with
|
5 |
Sole
Voting Power
0
|
6 |
Shared
Voting Power
2,266,229
|
7 |
Sole
Dispositive Power
0
|
8 |
Shared
Dispositive Power
2,266,229
|
9 |
Aggregate
Amount Beneficially Owned by each Reporting Person
2,266,229
|
10 |
Check
Box if the Aggregate Amount in Row (9) excludes certain shares
¨
|
11 |
Percent
of Class represented by amount in row 9
9.99%
|
12 |
type
of reporting person
IN
|
| Item 1(a). | Name of Issuer: |
Reviva Pharmaceuticals Holdings, Inc., a Delaware corporation (the
“Issuer”)
| Item 1(b). | Address of Issuer’s Principal Executive Offices: |
19925
Stevens Creek Blvd., Suite 100, Cupertino, CA 95014
| Item 2(a). | Name of Person Filing: |
This Statement on Schedule 13G (this
“Statement”) is filed by Tang Capital Partners, LP (“Tang Capital Partners”); Tang Capital Management,
LLC, the general partner of Tang Capital Partners (“Tang Capital Management”); and Kevin Tang, the manager of Tang
Capital Management.
| Item 2(b). | Address of Principal Business Office or, if none, Residence: |
4747 Executive Drive, Suite 210, San
Diego, CA 92121
Tang Capital Partners is a Delaware
limited partnership. Tang Capital Management is a Delaware limited liability company. Mr. Tang is a United States citizen.
| Item 2(d). | Title of Class of Securities: |
Common Stock, par value $0.0001 per
share (the “Common Stock”)
| Item 2(e). | CUSIP Number: 76152G100 |
| (a) | Amount Beneficially Owned: |
Tang Capital Partners. Tang Capital
Partners beneficially owns 2,266,229 shares of the Issuer’s Common Stock, which
consists of: (i) 24,125 shares of the Issuer’s Common Stock and (ii) 2,242,104 shares
currently issuable upon exercise of Warrants (as defined below).
Tang Capital Partners owns 4,533,300
of the Issuer’s Investor Warrants (the “Warrants,” as defined in the Issuer's Prospectus filed pursuant to Rule 424(b)(4)
with the Securities and Exchange Commission on May 28, 2021).
Each Investor Warrant is exercisable for 0.75 of a share of the Issuer’s
Common Stock. The Investor Warrants are immediately exercisable and expire five years from the date of issuance. Tang Capital Partners
may not exercise any portion of the Investor Warrants for shares of Common Stock if, as a result of the exercise, Tang Capital Partners,
together with its affiliates and any other person or entity acting as a group, would own more than 9.99% of the Issuer’s outstanding
shares of Common Stock after exercise. However, Tang Capital Partners may increase such percentage to any other percentage, not in excess
of 19.99% (to the extent such limit is required under applicable Nasdaq rules), by providing written notice to the Issuer, provided that
any increase in such percentage shall not be effective until 61 days after notice is provided to the Issuer.
Each Pre-Funded Warrant is exercisable for
one share of the Issuer’s Common Stock and is immediately exercisable. Tang Capital Partners may not exercise any portion of the
Pre-Funded Warrants for shares of Common Stock if, as a result of the exercise, Tang Capital Partners, together with its affiliates and
any other person or entity acting as a group, would own more than 9.99% of the Issuer’s outstanding shares of Common Stock after
exercise. However, Tang Capital Partners may increase such percentage to any other percentage, not in excess of 19.99% (to the extent
such limit is required under applicable Nasdaq rules), by providing written notice to the Issuer, provided that any increase in such
percentage shall not be effective until 61 days after notice is provided to the Issuer.
The foregoing limitations remain in effect
with respect to the Warrants, and, accordingly, only 2,242,104 shares are currently issuable upon exercise of the Warrants.
Tang Capital Partners shares voting and dispositive
power over such shares with Tang Capital Management and Kevin Tang.
Tang Capital Management. Tang
Capital Management beneficially owns 2,266,229 shares of the Issuer’s Common Stock, which consists of: (i) 24,125
shares of the Issuer’s Common Stock and (ii) 2,242,104 shares currently issuable upon exercise of Warrants.
Tang Capital Management shares voting and
dispositive power over such shares with Tang Capital Partners and Kevin Tang.
Kevin Tang. Kevin Tang beneficially
owns 2,266,229 shares of the Issuer’s Common Stock, which consists of: (i) 24,125
shares of the Issuer’s Common Stock and (ii) 2,242,104 shares currently issuable upon exercise of Warrants.
Kevin Tang shares voting and dispositive
power over such shares with Tang Capital Partners and Tang Capital Management.
The percentages used herein are based
on 22,684,975 shares of Common Stock outstanding, which is comprised of: (i) 20,442,871 shares of Common Stock outstanding as of November
10, 2022, as set forth in the Issuer’s Quarterly Report filed on Form 10-Q that was filed with the Securities and Exchange Commission
on November 14, 2022 and (ii) 2,242,104 shares of Common Stock currently issuable upon exercise of the Warrants.
Tang Capital Partners |
9.99% |
Tang Capital Management |
9.99% |
Kevin Tang |
9.99% |
| (c) | Number of shares as to which such person has: |
| (i) | sole power to vote or to direct the vote: |
Tang Capital Partners |
0 shares |
Tang Capital Management |
0 shares |
Kevin Tang |
0 shares |
| (ii) | shared power to vote or to direct the vote: |
Tang Capital Partners |
2,266,229 shares |
Tang Capital Management |
2,266,229 shares |
Kevin Tang |
2,266,229 shares |
| (iii) | sole power to dispose or to direct the disposition of: |
Tang Capital Partners |
0 shares |
Tang Capital Management |
0 shares |
Kevin Tang |
0 shares |
| (iv) | shared power to dispose or to direct the disposition of: |
Tang Capital Partners |
2,266,229 shares |
Tang Capital Management |
2,266,229 shares |
Kevin Tang |
2,266,229 shares |
| Item 5. | Ownership of Five Percent or Less of a Class. |
If this statement is being filed to
report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent
of the class of securities, check the following: ¨
| Item 6. | Ownership of More than Five Percent on Behalf of Another Person. |
Not applicable
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported
on by the Parent Holding Company. |
Not applicable.
| Item 8. | Identification and Classification of Members of the Group. |
Not applicable.
| Item 9. | Notice of Dissolution of Group. |
Not applicable.
By signing below I certify that,
to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of
or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held
in connection with or as a participant in any transaction having that purpose or effect.
Signature
After reasonable inquiry and to the best of
my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Date: |
February
14, 2023 |
|
|
|
|
|
|
|
|
|
|
TANG CAPITAL PARTNERS, LP |
|
|
|
|
|
By: |
Tang Capital Management, LLC, its General Partner |
|
|
|
|
|
|
|
|
|
By: |
/s/ Kevin Tang |
|
|
Kevin Tang, Manager |
|
|
|
|
|
|
|
|
|
TANG CAPITAL MANAGEMENT, LLC |
|
|
|
|
|
|
|
|
|
By: |
/s/ Kevin Tang |
|
|
Kevin Tang, Manager |
|
|
|
|
|
|
|
|
|
/s/ Kevin Tang |
|
Kevin Tang |
|
Page 8 of 8