STOCK TITAN

Cytokinetics (CYTK) CFO sells 38,730 shares at $82.30 after exercising options

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

Rhea-AI Filing Summary

Cytokinetics EVP and CFO Sung Lee reported an exercise-and-sell transaction in company stock. On June 24, 2026, Lee exercised stock options to acquire a total of 38,730 shares of Cytokinetics common stock at strike prices of $48.51 and $44.36 per share, then sold 38,730 shares in an open-market sale at an average price of $82.30 per share. Following the sale, Lee directly owned 63,221 shares of Cytokinetics common stock.

Positive

  • None.

Negative

  • None.
Insider Lee Sung
Role EVP, Chief Financial Officer
Sold 38,730 shs ($3.19M)
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (Right to Buy) 23,370 $0.00 --
Exercise Non-Qualified Stock Option (Right to Buy) 9,307 $0.00 --
Exercise Incentive Stock Option (Right to Buy) 2,817 $0.00 --
Exercise Non-Qualified Stock Option (Right to Buy) 1,113 $0.00 --
Exercise Incentive Stock Option (Right to Buy) 188 $0.00 --
Exercise Non-Qualified Stock Option (Right to Buy) 822 $0.00 --
Exercise Non-Qualified Stock Option (Right to Buy) 1,113 $0.00 --
Exercise Common Stock 23,370 $48.51 $1.13M
Exercise Common Stock 9,307 $44.36 $413K
Exercise Common Stock 2,817 $44.36 $125K
Exercise Common Stock 1,113 $48.51 $54K
Exercise Common Stock 188 $44.36 $8K
Exercise Common Stock 822 $44.36 $36K
Exercise Common Stock 1,113 $48.51 $54K
Sale Common Stock 38,730 $82.30 $3.19M
Holdings After Transaction: Non-Qualified Stock Option (Right to Buy) — 30,047 shares (Direct, null); Incentive Stock Option (Right to Buy) — 6,199 shares (Direct, null); Common Stock — 86,591 shares (Direct, null)
Footnotes (1)
Shares sold 38,730 shares Open-market sale of common stock on June 24, 2026 at $82.30
Sale price $82.30 per share Average price for 38,730 common shares sold June 24, 2026
Options exercised 38,730 shares Total underlying common shares from derivative exercises on June 24, 2026
Option strike price 1 $48.51 per share Exercise price for certain non-qualified stock options
Option strike price 2 $44.36 per share Exercise price for certain non-qualified and incentive stock options
Shares owned after sale 63,221 shares Direct holdings of common stock following the June 24, 2026 transactions
open-market sale financial
"38,730 shares in an open-market sale at an average price of $82.30 per share"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Non-Qualified Stock Option (Right to Buy) financial
"security_title: "Non-Qualified Stock Option (Right to Buy)" with an exercise price of $48.51"
Incentive Stock Option (Right to Buy) financial
"security_title: "Incentive Stock Option (Right to Buy)" with an exercise price of $44.36"
derivative exercise/conversion financial
"transaction_action: "derivative exercise/conversion" for multiple M-coded option transactions"
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Learn about SEC filing dates
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).
X
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*
Lee Sung

(Last)(First)(Middle)
350 OYSTER POINT BLVD

(Street)
SOUTH SAN FRANCISCO CALIFORNIA 94080

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
CYTOKINETICS INC [ CYTK ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/24/2026
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 Stock06/24/2026M23,370A$48.5186,591D
Common Stock06/24/2026M9,307A$44.3695,898D
Common Stock06/24/2026M2,817A$44.3698,715D
Common Stock06/24/2026M1,113A$48.5199,828D
Common Stock06/24/2026M188A$44.36100,016D
Common Stock06/24/2026M822A$44.36100,838D
Common Stock06/24/2026M1,113A$48.51101,951D
Common Stock06/24/2026S38,730D$82.363,221D
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
Non-Qualified Stock Option (Right to Buy)$48.5106/24/2026M23,37006/02/202505/30/2034Common Stock23,370$030,047D
Non-Qualified Stock Option (Right to Buy)$44.3606/24/2026M9,30704/14/202503/13/2035Common Stock9,307$032,019D
Incentive Stock Option (Right to Buy)$44.3606/24/2026M2,81704/14/202503/13/2035Common Stock2,817$06,199D
Non-Qualified Stock Option (Right to Buy)$48.5106/24/2026M1,11306/02/202505/30/2034Common Stock1,113$028,934D
Incentive Stock Option (Right to Buy)$44.3606/24/2026M18804/14/202503/13/2035Common Stock188$06,011D
Non-Qualified Stock Option (Right to Buy)$44.3606/24/2026M82204/14/202503/13/2035Common Stock822$031,197D
Non-Qualified Stock Option (Right to Buy)$48.5106/24/2026M1,11306/02/202505/30/2034Common Stock1,113$027,821D
Explanation of Responses:
/s/ John O. Faurescu, attorney-in-fact for Mr. Lee06/29/2026
** 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)

FAQ

What did Cytokinetics (CYTK) CFO Sung Lee report in this Form 4?

Sung Lee reported exercising stock options and selling Cytokinetics common shares. On June 24, 2026, he exercised options for 38,730 shares and sold 38,730 shares in an open-market transaction at an average price of $82.30 per share.

How many Cytokinetics (CYTK) shares did the CFO sell and at what price?

Sung Lee sold 38,730 shares of Cytokinetics common stock. The shares were sold in an open-market transaction at an average price of $82.30 per share on June 24, 2026, according to the Form 4 insider trading report.

What options did Cytokinetics (CYTK) CFO Sung Lee exercise in this filing?

He exercised stock options covering 38,730 underlying shares of Cytokinetics common stock. These included options with exercise prices of $48.51 and $44.36 per share, converting derivative positions into common shares before the reported open-market sale on June 24, 2026.

How many Cytokinetics (CYTK) shares does the CFO hold after these transactions?

After the reported sale, Sung Lee directly owned 63,221 shares of Cytokinetics common stock. This post-transaction holding reflects his remaining direct equity stake following the exercise of options and the 38,730-share open-market sale on June 24, 2026.

Were the Cytokinetics (CYTK) CFO’s transactions open-market trades or something else?

The Form 4 shows an open-market sale of 38,730 Cytokinetics shares coded as “S.” The surrounding transactions with code “M” reflect derivative exercises or conversions, where stock options were exercised to acquire common shares before the sale.