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Tenax Therapeutics (TENX) CEO exercises options, adds 8,719 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Tenax Therapeutics, Inc. CEO Christopher Thomas Giordano exercised stock options on July 13, 2026 to acquire 8,719 common shares, including 8,500 shares at $5.94 per share and 219 shares at $3.549 per share. The aggregate exercise price for these options was paid in cash.

After the exercises, he directly owned 11,324 and 2,824 common shares in the reported accounts and continued to hold stock options covering 1,400,000 shares at a $5.89 exercise price and 450,000 shares at a $13.30 exercise price, with vesting schedules extending over several years and expirations in 2035 and 2036.

Positive

  • None.

Negative

  • None.
Insider Giordano Christopher Thomas
Role CEO
Type Security Shares Price Value
Exercise Stock Option (right to buy) 219 $0.00 --
Exercise Stock Option (right to buy) 8,500 $0.00 --
Exercise Common Stock 219 $3.549 $777.23
Exercise Common Stock 8,500 $5.94 $50K
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
Holdings After Transaction: Stock Option (right to buy) — 218 shares (Direct); Common Stock — 2,824 shares (Direct)
Footnotes (1)
  1. The aggregate exercise price was paid in cash. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on each of May 17, 2025, May 17, 2026, May 17, 2027, and May 17, 2028, subject to the Reporting Person's continued employment. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on January 9, 2027, and thereafter 1/36th of the remaining shares will vest on the last day of each following month for a period of 36 months, subject to the Reporting Person's continued employment. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on May 16, 2026, and thereafter 1/36th of the remaining shares will vest on the last day of each following month for a period of 36 months, subject to the Reporting Person's continued employment. The options vested and became exercisable as follows: 25% of the underlying shares of common stock vested and became exercisable on each of June 9, 2023, June 9, 2024, June 9, 2025, and June 9, 2026, subject to the Reporting Person's continued employment. The options vested and became exercisable as follows: 25% of the underlying shares of common stock vested and became exercisable on each of July 6, 2022, July 6, 2023, July 6, 2024, and July 6, 2025, subject to the Reporting Person's continued employment.
Shares acquired via option exercise 8,719 shares Total common shares acquired through option exercises on July 13, 2026
Exercise price per share $5.94 Exercise price for 8,500-share stock option exercised into common stock
Exercise price per share $3.549 Exercise price for 219-share stock option exercised into common stock
Direct common shares held 11,324 shares Direct common shares held after one of the exercise-related transactions
Direct common shares held 2,824 shares Direct common shares held after the second exercise-related transaction
Unexercised option position 1,400,000 underlying shares Stock option on 1,400,000 shares at $5.89, expiring May 16, 2035
Unexercised option position 450,000 underlying shares Stock option on 450,000 shares at $13.30, expiring January 9, 2036
Stock Option (right to buy) financial
"security_title shows Stock Option (right to buy) for derivative holdings"
exercise price financial
"conversion_or_exercise_price fields list the option exercise price per share"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vest and become exercisable financial
"Footnotes describe when options vest and become exercisable over several years"
aggregate exercise price financial
"A footnote states the aggregate exercise price was paid in cash"
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FAQ

What insider activity did Tenax Therapeutics (TENX) report for its CEO?

Tenax Therapeutics reported that CEO Christopher Thomas Giordano exercised stock options on July 13, 2026 to acquire 8,719 common shares. These were derivative exercises of existing options rather than open-market stock purchases.

How many TENX shares did the CEO acquire and at what exercise prices?

The CEO acquired 8,719 common shares through option exercises: 8,500 shares at an exercise price of $5.94 per share and 219 shares at an exercise price of $3.549 per share, all on July 13, 2026.

How were the TENX option exercises by the CEO paid for?

According to the report’s footnotes, the aggregate exercise price was paid in cash for the options exercised by the CEO. This indicates the transactions were cash-paid exercises rather than net or cashless exercises using previously held shares.

What are the CEO’s direct TENX common share holdings after these transactions?

Following the reported option exercises, the CEO directly held 11,324 common shares in one reported account and 2,824 common shares in another direct holding line. These figures represent his post-transaction direct ownership positions disclosed in the report.

What unexercised TENX stock options does the CEO still hold?

The CEO continues to hold stock options on 1,400,000 shares at a $5.89 exercise price and 450,000 shares at a $13.30 exercise price, plus smaller grants of 157 and 125 underlying shares at higher exercise prices, with expirations ranging from 2031 to 2036.

How do the CEO’s TENX stock options vest over time?

Footnotes state several option awards vest 25% on a specified date and 25% annually1/36 of remaining shares monthly
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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 APPROVAL
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).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Giordano Christopher Thomas

(Last)(First)(Middle)
101 GLEN LENNOX DRIVE, SUITE 300

(Street)
CHAPEL HILL NORTH CAROLINA 27517

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
TENAX THERAPEUTICS, INC. [ TENX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/13/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock07/13/2026M219A$3.549(1)2,824D
Common Stock07/13/2026M8,500A$5.94(1)11,324D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$3.54907/13/2026M219 (2)05/17/2034Common Stock219$0218D
Stock Option (right to buy)$5.9407/13/2026M8,50012/10/202512/10/2034Common Stock8,500$01,241,500D
Stock Option (right to buy)$13.3 (3)01/09/2036Common Stock450,000450,000D
Stock Option (right to buy)$5.89 (4)05/16/2035Common Stock1,400,0001,400,000D
Stock Option (right to buy)$992 (5)06/09/2032Common Stock125125D
Stock Option (right to buy)$3,152 (6)07/06/2031Common Stock157157D
Explanation of Responses:
1. The aggregate exercise price was paid in cash.
2. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on each of May 17, 2025, May 17, 2026, May 17, 2027, and May 17, 2028, subject to the Reporting Person's continued employment.
3. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on January 9, 2027, and thereafter 1/36th of the remaining shares will vest on the last day of each following month for a period of 36 months, subject to the Reporting Person's continued employment.
4. The options vest and become exercisable as follows: 25% of the underlying shares of common stock vest and become exercisable on May 16, 2026, and thereafter 1/36th of the remaining shares will vest on the last day of each following month for a period of 36 months, subject to the Reporting Person's continued employment.
5. The options vested and became exercisable as follows: 25% of the underlying shares of common stock vested and became exercisable on each of June 9, 2023, June 9, 2024, June 9, 2025, and June 9, 2026, subject to the Reporting Person's continued employment.
6. The options vested and became exercisable as follows: 25% of the underlying shares of common stock vested and became exercisable on each of July 6, 2022, July 6, 2023, July 6, 2024, and July 6, 2025, subject to the Reporting Person's continued employment.
/s/ S. Halle Vakani, as Attorney-in-Fact07/14/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)