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David B. Singer Insider Profile

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David B. Singer, Director at Infleqtion, holds 350.12K shares in Infleqtion (Ticker: INFQ), holds 0.00 shares in Castlight Health (Ticker: CSLT), holds 264.00 shares in 1Life Healthcare (Ticker: ONEM).
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David B. Singer

David B. Singer
Infleqtion (INFQ)
Director

Ranked #44,812 out of 109,030 Corporate Insiders

Profitable Transactions

100%
2 out of 2 Profitable Transactions

Average Return

+17.10%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$88M
94.93%
5.07%
0.00%
0.00%
A breakdown of David B. Singer's holdings
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Insider Roles

Corcept Therapeutics
(CORT)
Director
Infleqtion
(INFQ)
Director
Seer
(SEER)
Director
Pacific Biosciences
(PACB)
Director
Roles that David B. Singer holds in companies
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Most Profitable Insider Trade

Stock:
Infleqtion
(INFQ)
Rating:Informative Sell
Date:May 29, 2026 - Today
Return:+19.10%
The most profitable trade made by David B. Singer
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David B. Singer's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
INFQ
Infleqtion
May 29, 2026
Director
Uninformative Buy
―
$4.44M
CSLT
Castlight Health
Feb 18, 2022
―
Uninformative Sell
―
$0.00
ONEM
1Life Healthcare
Jul 19, 2021
―
Uninformative Buy
―
$4.73K
SEER
Seer
―
Director
―
―
CORT
Corcept Therapeutics
―
Director
―
$83.11M
AFFX
Affymetrix
―
―
―
$228.81K
PACB
Pacific Biosciences
―
Director
―
$0.00
List of latest transactions for each holding click on a transaction to see David B. Singer's performance on stock
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David B. Singer insider profile FAQ

What is the percentage of profitable transactions made by David B. Singer?
The percentage of profitable transactions made by David B. Singer is 100%.
    What is the average return per transaction made by David B. Singer?
    The average return per transaction made by David B. Singer is 17.10%.
      What stocks does David B. Singer hold?
      David B. Singer holds: INFQ, CSLT, ONEM, SEER, CORT, AFFX, PACB stocks.
        What was David B. Singer’s latest transaction?
        David B. Singer latest transaction was an Uninformative Buy of ―.
          What was David B. Singer's most profitable transaction?
          David B. Singer’s most profitable transaction was an Informative Sell of INFQ stock on May 29, 2026. The return on the trade was 19.10%.
            What is David B. Singer's role in Infleqtion?
            David B. Singer's role in Infleqtion is Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.