Here are the highest paid CEOs in the S&P 500 index for 2018, as calculated by The Associated Press and Equilar, an executive data firm.

The AP's compensation study covered 340 executives at S&P 500 companies who have served at least two full consecutive fiscal years at their respective companies, which filed proxy statements between Jan. 1 and April 30. Some companies with highly paid CEOs do not fit these criteria.

More Images
FILE - In this March 13, 2017, file photo, The Walt Disney Company CEO Robert Iger attends a special screening of Disney's "Beauty and the Beast" at Alice Tully Hall in New York. Iger was the second-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $65.6 million. (Photo by Evan AgostiniInvisionAP, File)

Here are the highest paid CEOs in the S&P 500 index for 2018, as calculated by The Associated Press and Equilar, an executive data firm.

This May 23, 2019, photo shows the logo for the Jefferies Financial Group in New York. CEO Richard Handler was the third-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $44.7 million. (AP PhotoRichard Drew)

Compensation often includes stock and option grants that the CEO may not receive for years unless certain performance measures are met. For some companies, big raises occur when CEOs get a stock or option grant in one year as part of a multi-year grant.

In this undated photo provided by Hologic, Inc. company CEO Stephen MacMillan poses for a photo. MacMillan was the fourth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $42 million. (Hologic, Inc via AP)

$129.5 million

In this undated image provided by Align Technology company CEO Joseph Hogan poses for a photo. was the fifth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $41.8 million. (Align Technology via AP)

3. Richard Handler

In this undated image provided by PayPal company CEO Daniel Schulman poses for a photo. Schulman was the sixth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $37.8 million. (PayPal via AP)

His pay vs typical company worker: 478 times

FILE - In this Feb. 28, 2017, file photo, Netflix Founder and CEO Reed Hastings smiles during an interview in Barcelona, Spain. Hastings was the seventh-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $36.1 million. (AP PhotoManu Fernandez, File)

Change from last year: 96%

FILE - In this Dec. 8, 2015, file photo, Comcast chairman and CEO Brian Roberts speaks at the conference "Ignition: Future of Digital," in New York. Roberts was the eighth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $35 million. (AP PhotoMark Lennihan, File)

8. Brian Roberts

In this undated photo provided by Activision Blizzard company CEO Bobby Kotick poses for a photo. Kotick the ninth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30.8 million. (Activision Blizzard via AP)

10. James Dimon

FILE - In this April 10, 2019, file photo JPMorgan Chase chairman and CEO Jamie Dimon testifies before the House Financial Services Committee during a hearing on Capitol Hill in Washington. Dimon was the tenth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30 million. (AP PhotoPatrick Semansky, File)

FILE - In this April 10, 2019, file photo JPMorgan Chase chairman and CEO Jamie Dimon testifies before the House Financial Services Committee during a hearing on Capitol Hill in Washington. Dimon was the tenth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30 million. (AP PhotoPatrick Semansky, File)

Pay for chief executives rose to a median of $12 million last year, including salary, stock and other compensation. Median means half were larger, and half were smaller.

FILE - In this March 13, 2017, file photo, The Walt Disney Company CEO Robert Iger attends a special screening of Disney's "Beauty and the Beast" at Alice Tully Hall in New York. Iger was the second-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $65.6 million. (Photo by Evan AgostiniInvisionAP, File)

FILE - In this March 13, 2017, file photo, The Walt Disney Company CEO Robert Iger attends a special screening of Disney's "Beauty and the Beast" at Alice Tully Hall in New York. Iger was the second-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $65.6 million. (Photo by Evan AgostiniInvisionAP, File)

Compensation often includes stock and option grants that the CEO may not receive for years unless certain performance measures are met. For some companies, big raises occur when CEOs get a stock or option grant in one year as part of a multi-year grant.

1. David Zaslav

Discovery

This May 23, 2019, photo shows the logo for the Jefferies Financial Group in New York. CEO Richard Handler was the third-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $44.7 million. (AP PhotoRichard Drew)

This May 23, 2019, photo shows the logo for the Jefferies Financial Group in New York. CEO Richard Handler was the third-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $44.7 million. (AP PhotoRichard Drew)

$129.5 million

Change from last year: 207%

His pay vs typical company worker: 1,511 times, up from 522

2. Robert Iger

Walt Disney

$65.6 million

Change from last year: 81%

His pay vs typical company worker: 1,424 times

In this undated photo provided by Hologic, Inc. company CEO Stephen MacMillan poses for a photo. MacMillan was the fourth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $42 million. (Hologic, Inc via AP)

In this undated photo provided by Hologic, Inc. company CEO Stephen MacMillan poses for a photo. MacMillan was the fourth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $42 million. (Hologic, Inc via AP)

3. Richard Handler

Jefferies Financial Group

$44.7 million

Change from last year: 105%

His pay vs typical company worker: 298 times, down from 489

4. Stephen MacMillan

Hologic

$42 million

Change from last year: 275%

In this undated image provided by Align Technology company CEO Joseph Hogan poses for a photo. was the fifth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $41.8 million. (Align Technology via AP)

In this undated image provided by Align Technology company CEO Joseph Hogan poses for a photo. was the fifth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $41.8 million. (Align Technology via AP)

His pay vs typical company worker: 478 times

5. Joseph Hogan

Align Technology

$41.8 million

Change from last year: 256%

His pay vs typical company worker: 3,168 times, up from 920

6. Daniel Schulman

PayPal

$37.8 million.

In this undated image provided by PayPal company CEO Daniel Schulman poses for a photo. Schulman was the sixth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $37.8 million. (PayPal via AP)

In this undated image provided by PayPal company CEO Daniel Schulman poses for a photo. Schulman was the sixth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $37.8 million. (PayPal via AP)

Change from last year: 96%

His pay vs typical company worker: 543 times, up from 274

7. Reed Hastings

Netflix

$36.1 million

Change from last year: 48%

His pay vs typical company worker: 178 times, up from 133

FILE - In this Feb. 28, 2017, file photo, Netflix Founder and CEO Reed Hastings smiles during an interview in Barcelona, Spain. Hastings was the seventh-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $36.1 million. (AP PhotoManu Fernandez, File)

FILE - In this Feb. 28, 2017, file photo, Netflix Founder and CEO Reed Hastings smiles during an interview in Barcelona, Spain. Hastings was the seventh-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $36.1 million. (AP PhotoManu Fernandez, File)

8. Brian Roberts

Comcast

$35 million

Change from last year: 8%

His pay vs typical company worker: 426 times, down from 458

9. Robert Kotick

Activision Blizzard

$30.8 million

Change from last year: 7%

His pay vs typical company worker: 319 times, up from 306

FILE - In this Dec. 8, 2015, file photo, Comcast chairman and CEO Brian Roberts speaks at the conference "Ignition: Future of Digital," in New York. Roberts was the eighth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $35 million. (AP PhotoMark Lennihan, File)

FILE - In this Dec. 8, 2015, file photo, Comcast chairman and CEO Brian Roberts speaks at the conference "Ignition: Future of Digital," in New York. Roberts was the eighth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $35 million. (AP PhotoMark Lennihan, File)

10. James Dimon

JPMorgan Chase

$30 million

Change from last year: 6%

His pay vs typical company worker: 381 times, up from 364

In this undated photo provided by Activision Blizzard company CEO Bobby Kotick poses for a photo. Kotick the ninth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30.8 million. (Activision Blizzard via AP)

In this undated photo provided by Activision Blizzard company CEO Bobby Kotick poses for a photo. Kotick the ninth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30.8 million. (Activision Blizzard via AP)

FILE - In this April 10, 2019, file photo JPMorgan Chase chairman and CEO Jamie Dimon testifies before the House Financial Services Committee during a hearing on Capitol Hill in Washington. Dimon was the tenth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30 million. (AP PhotoPatrick Semansky, File)

FILE - In this April 10, 2019, file photo JPMorgan Chase chairman and CEO Jamie Dimon testifies before the House Financial Services Committee during a hearing on Capitol Hill in Washington. Dimon was the tenth-highest paid CEO at big U.S. companies for 2018, as calculated by The Associated Press and Equilar, an executive data firm. He made $30 million. (AP PhotoPatrick Semansky, File)