Washington, D.C. 20549


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*

(Last) (First) (Middle)


(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/22/2022 A 49,261 A $2.03 19,004,634(1) I by R.J. Kirk DOT(2)
Common Stock 1,000,000 I by Parkview 2020(2)
Common Stock 479,857 I by JPK 2008(2)
Common Stock 3,597,953 I by JPK 2009(2)
Common Stock 1,612,186 I by JPK 2012(2)
Common Stock 447,405 I by Kellie L. Banks LTT(2)
Common Stock 478,894 I by MGK 2008(2)
Common Stock 3,838,992 I by MGK 2009(2)
Common Stock 1,594,863 I by MGK 2011(2)
Common Stock 567,535 I by ZSK 2008(2)
Common Stock 342,685 I by ZSK 2009(2)
Common Stock 1,144,481 I by Spouse
Common Stock 13,520,789 I by Kapital Joe(2)
Common Stock 1,403 I by Lotus(2)
Common Stock 16,406,828 I by Sunset 2020(2)(4)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase Common Stock (Right to Buy) $2.03 02/22/2022 A 166,378 02/22/2022 02/22/2032 Common Stock 166,378 $0 166,378 I by R.J. Kirk DOT(2)
Restricted Stock Units (3) 02/22/2022 A 123,152 (3) (3) Common Stock 123,152 $0 123,152 I by R.J. Kirk DOT(2)
Explanation of Responses:
1. The indicated number of shares reflects an internal transfer from ADC 2010, LLC ("ADC 2010") to the R.J. Kirk Declaration of Trust ("R.J. Kirk DOT"), following the liquidation of ADC 2010 on December 31, 2021.
2. Randal J. Kirk controls each of R.J. Kirk DOT, Parkview 2020 Limited Partnership ("Parkview 2020"), JPK 2008 LLC ("JPK 2008"), JPK 2009 LLC ("JPK 2009"), JPK 2012 LLC ("JPK 2012"), Kellie L. Banks (2009) Long Term Trust ("Kellie L. Banks LTT"), MGK 2008 LLC ("MGK 2008"), MGK 2009 LLC ("MGK 2009"), MGK 2011 LLC ("MGK 2011"), ZSK 2008 LLC ("ZSK 2008"), ZSK 2009 LLC ("ZSK 2009"), Kapital Joe, LLC ("Kapital Joe"), Lotus Capital (2000) Company, Inc. ("Lotus"), and Sunset 2020 LLC ("Sunset 2020"). Shares held by these entities may be deemed to be beneficially owned (as defined under Rule 13d-3 promulgated under the Securities Exchange Act of 1934, as amended) by Mr. Kirk. Mr. Kirk disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
3. Each restricted stock unit represents a contingent right to receive one (1) share of issuer common stock, and (ii) shall vest on the one-year anniversary of the date of grant, subject to Mr. Kirk continuously providing services to the issuer or an affiliate from the date of grant until such time.
4. Due to row limitations, this filing is comprised of two (2) Forms 4. Additional details are reported on a separate Form 4 filed with the SEC on February 24, 2022.
/s/ Randal J. Kirk 02/24/2022
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.