CYTK
Cytokinetics (CYTK)
NASDAQ
$64.99-$0.61 (-0.94%)
Price as of Oct 02, 2026 7:31 PM EDT
  • $9.1B
    Market Cap
  • 15.15%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
16.15%
20.1M
+3.5M (+17.65%)
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
15.04%
18.7M
+1.2M (+6.38%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
12.43%
15.5M
+216,539 (+1.40%)
Dec 31, 2024
BLACKROCK INC.
11.79%
14.7M
+2.3M (+15.39%)
Jun 30, 2024
VANGUARD GROUP INC
9.68%
12.0M
+191,336 (+1.59%)
Dec 31, 2025
WELLINGTON MANAGEMENT GROUP LLP
5.57%
6.9M
-1.1M (-15.55%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
5.39%
6.7M
+868,017 (+12.93%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions2.4B (63.60%)
  • Mutual Funds1.3B (35.91%)
  • Insiders18.1M (0.49%)
  • Other0 (0.00%)

Insider Transactions

  • 0.49% (18.1M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 8
    Number of InsiderSelling (last 12 months)
  • $317.2M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Blum Robert I
President & CEO
Exempt
Sep 28, 2026
$0.00
7,500
$0.00
149,245
Blum Robert I
President & CEO
Exempt
Sep 28, 2026
$79,500.00
7,500
$10.60
286,044
Blum Robert I
President & CEO
Sell
Sep 28, 2026
$490,950.00
7,500
$65.46
278,544
Blum Robert I
President & CEO
Sell
Sep 15, 2026
$6.8M
97,926
$69.33
0
Blum Robert I
President & CEO
Exempt
Sep 14, 2026
$0.00
7,500
$0.00
156,745
Blum Robert I
President & CEO
Exempt
Sep 14, 2026
$79,500.00
7,500
$10.60
385,320
Blum Robert I
President & CEO
Sell
Sep 14, 2026
$550,800.00
7,500
$73.44
377,820
Blum Robert I
President & CEO
Gift
Sep 14, 2026
$0.00
1,350
$0.00
376,470
Blum Robert I
President & CEO
Gift
Sep 14, 2026
$0.00
97,926
$0.00
278,544
Blum Robert I
President & CEO
Gift
Sep 14, 2026
$0.00
97,926
$0.00
97,926
Landry Robert E
Sell
Sep 11, 2026
$74,660.00
1,000
$74.66
9,184
Malik Fady Ibraham
EVP Research & Development
Exempt
Sep 08, 2026
$0.00
3,500
$0.00
26,886
Malik Fady Ibraham
EVP Research & Development
Exempt
Sep 08, 2026
$27,300.00
3,500
$7.80
157,402
Malik Fady Ibraham
EVP Research & Development
Sell
Sep 08, 2026
$264,110.00
3,500
$75.46
153,902
PARSHALL B LYNNE
Sell
Sep 01, 2026
$357,400.00
5,000
$71.48
10,784
Blum Robert I
President & CEO
Exempt
Aug 31, 2026
$0.00
7,500
$0.00
164,245
Callos Andrew
EVP, Chief Commercial Officer
Exempt
Aug 31, 2026
$0.00
10,000
$0.00
0
Blum Robert I
President & CEO
Exempt
Aug 31, 2026
$79,500.00
7,500
$10.60
385,320
Callos Andrew
EVP, Chief Commercial Officer
Exempt
Aug 31, 2026
$232,600.00
10,000
$23.26
68,555
Blum Robert I
President & CEO
Sell
Aug 31, 2026
$526,800.00
7,500
$70.24
377,820
Callos Andrew
EVP, Chief Commercial Officer
Sell
Aug 31, 2026
$702,400.00
10,000
$70.24
58,555
Blum Robert I
President & CEO
Exempt
Aug 10, 2026
$0.00
7,500
$0.00
171,745
Blum Robert I
President & CEO
Exempt
Aug 10, 2026
$79,500.00
7,500
$10.60
385,320
Blum Robert I
President & CEO
Sell
Aug 10, 2026
$575,700.00
7,500
$76.76
377,820
Malik Fady Ibraham
EVP Research & Development
Exempt
Jul 21, 2026
$0.00
3,500
$0.00
33,886
Malik Fady Ibraham
EVP Research & Development
Exempt
Jul 21, 2026
$27,300.00
3,500
$7.80
157,402
Malik Fady Ibraham
EVP Research & Development
Sell
Jul 21, 2026
$282,065.00
3,500
$80.59
153,902
WIERENGA WENDELL
Award
Jul 15, 2026
$6,196.50
75
$82.62
35,563
Daly James M
Award
Jul 15, 2026
$12,475.62
151
$82.62
3,390
HENDERSON JOHN T
Award
Jul 15, 2026
$22,472.64
272
$82.62
78,360