Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.
Disclosed holdings over time 53 weekly points
What the 2 currently disclosed positions would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.
How the line is built
Share counts are as last reported to the SEC and held constant; only prices move.
Insider activity May 15, 2024 – Mar 15, 2026
Jeffrey Hessekiel is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 24 transactions between May 15, 2024 and Mar 15, 2026. The buy and sell totals below count only codes P, S.
Why the other codes are excluded
Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.
Reported transactions
Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 24 most recent rows are grouped into 22 lines by date, company and transaction type — open a line to see every lot with its own source link.
How to read this list
Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.
The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.
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CYTOKINETICS INC CYTK A Grant or awardnot a buy/sell decisionreported at zero 20,646 shares $0 at $0.00 SEC filing ↗
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CYTOKINETICS INC CYTK A Grant or awardnot a buy/sell decisionreported at zero 87,297 shares $0 at $0.00 SEC filing ↗
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EXELIXIS, INC. EXEL
F Shares withheld for taxesnot a buy/sell decision
34,035 shares
$1.52M
at $44.65 SEC filing ↗
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EXELIXIS, INC. EXEL
A Grant or awardnot a buy/sell decisionreported at zero
154,070 shares
$0
at $0.00 SEC filing ↗
-
EXELIXIS, INC. EXEL
A Grant or awardnot a buy/sell decisionreported at zero
52,192 shares
$0
at $0.00 SEC filing ↗
-
EXELIXIS, INC. EXEL
F Shares withheld for taxesnot a buy/sell decision
18,134 shares
$634.7K
at $35.00 SEC filing ↗
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EXELIXIS, INC. EXEL
A Grant or awardnot a buy/sell decisionreported at zero
118,780 shares
$0
at $0.00 SEC filing ↗
-
EXELIXIS, INC. EXEL
F Shares withheld for taxesnot a buy/sell decision
26,289 shares
$979.8K
at $37.27 SEC filing ↗
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EXELIXIS, INC. EXEL
G Bona fide giftnot a buy/sell decisionreported at zero
15,000 shares
$0
at $0.00 SEC filing ↗
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EXELIXIS, INC. EXEL
M Option exercise or conversionnot a buy/sell decision
129,314 shares
$2.43M
at $18.80 SEC filing ↗
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EXELIXIS, INC. EXEL
F Shares withheld for taxesnot a buy/sell decision
98,908 shares
$3.55M
at $35.93 SEC filing ↗
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EXELIXIS, INC. EXEL
F Shares withheld for taxesnot a buy/sell decision
14,672 shares
$514.3K
at $35.05 SEC filing ↗
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EXELIXIS, INC. EXEL
M Option exercise or conversionnot a buy/sell decision
20,000 shares
$488.2K
at $24.41 SEC filing ↗
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EXELIXIS, INC. EXEL
M Option exercise or conversionnot a buy/sell decision
80,000 shares
$1.95M
at $24.41 SEC filing ↗
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EXELIXIS, INC. EXEL
F Shares withheld for taxes × 3not a buy/sell decision
25,941 shares
$544.5K
The 3 lots that make up this line, each with the source behind it. Shares Price Value Filing 10,101 $20.99 $212.0K SEC filing ↗ 8,600 $20.99 $180.5K SEC filing ↗ 7,240 $20.99 $152.0K SEC filing ↗
Disclosed holdings
Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.
What is not counted here
Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.
Other insiders at the same companies
People who also file with the SEC at a company where Jeffrey Hessekiel reports shares.
Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.
- Amy C Peterson EVP · EXELIXIS, INC.
- Andrew Callos EVP · CYTOKINETICS INC
- B. Lynne Parshall Board Member · CYTOKINETICS INC
- Bob Oliver Board Member · EXELIXIS, INC.
- Brenda Hefti General Counsel · EXELIXIS, INC.
- Brett A Pletcher General Counsel · CYTOKINETICS INC
- Christopher J Senner CFO · EXELIXIS, INC.
- Dana Aftab EVP · EXELIXIS, INC.
- Edward M. Kaye M.D. CEO · CYTOKINETICS INC
- Fady Ibraham Malik EVP · CYTOKINETICS INC
- George Poste Board Member · EXELIXIS, INC.
- Jack L. Wyszomierski Board Member · EXELIXIS, INC.
Sources
The filings linked in the tables above are the sources for every figure on this page.
Think a number here is wrong? Open the linked filing and compare — how to report it.
Profile record last refreshed Sep 8, 2026.