Prometheus Biosciences, Inc.
Prometheus Biosciences, Inc. (RXDX) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · RXDX · as of Jun 9, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
12
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Prometheus Biosciences, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 9, 2026
RXDX insider buying and selling by quarter
RXDX insider selling · RXDX insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 9, 2026
Recent insider transactions
RXDX executive sell shares · RXDX board member insider trading · RXDX insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Jun 16, 2023 | Hendrix Martin Director | Other | 2,071 | $414K | Form 4 |
| Jun 16, 2023 | Laur James Director | Other | 2,071 | $414K | Form 4 |
| Jun 16, 2023 | Stenhouse Mark COO | Other | 14,000 | $2.80M⚡ | Form 4 |
| Jun 16, 2023 | Szela Mary T Director | Other | 2,071 | $414K | Form 4 |
| Jun 16, 2023 | McKenna Mark C. Chairman, President and CEO · Director | Other | 178,098 | $35.62M⚡ | Form 4 |
| Jun 16, 2023 | Swain Judith L Director | Other | 2,071 | $414K | Form 4 |
| Jun 16, 2023 | PAPA JOSEPH C Director | Other | 10,000 | $2.00M⚡ | Form 4 |
| Jun 16, 2023 | Hassan Fred Director | Other | 2,123 | $425K | Form 4 |
| Jun 16, 2023 | Marshall Keith W CFO | Other | 87,973 | $17.59M⚡ | Form 4 |
| Jun 16, 2023 | Adams Helen C. Director | Other | 2,674 | $535K | Form 4 |
| Jun 2, 2023 | McKenna Mark C. Chairman, President & CEO · Director | Option | 3 | $5 | Form 4 |
| Jun 2, 2023 | McKenna Mark C. Chairman, President & CEO · Director | Option | 122,528 | $355K | Form 4 |
| Jun 2, 2023 | Marshall Keith W CFO | Option | 78,162 | $242K | Form 4 |
| Jun 1, 2023 | Stenhouse Mark COO | Other | 14,000 | — | Form 4 |
| Jun 1, 2023 | Stenhouse Mark COO | Other | 14,000 | — | Form 4 |
| Jun 2, 2023 | PAPA JOSEPH C Director | Other | 10,000 | — | Form 4 |
| Jun 2, 2023 | PAPA JOSEPH C Director | Other | 10,000 | — | Form 4 |
| May 19, 2023 | Szela Mary T Director | Award | 2,071 | — | Form 4 |
| May 19, 2023 | Swain Judith L Director | Award | 2,071 | — | Form 4 |
| May 19, 2023 | PAPA JOSEPH C Director | Award | 2,278 | — | Form 4 |
| May 19, 2023 | Laur James Director | Award | 2,071 | — | Form 4 |
| May 19, 2023 | Hendrix Martin Director | Award | 2,071 | — | Form 4 |
| May 19, 2023 | Hassan Fred Director | Award | 2,123 | — | Form 4 |
| May 19, 2023 | Adams Helen C. Director | Award | 2,174 | — | Form 4 |
| Apr 5, 2023 | Marshall Keith W CFO | Option | 10,000 | $37K | Form 4 |
McKenna Mark C.
Chairman, President and CEO · Director
Date
Jun 16
Shares
178,098
Price
$200.00
Value
$35.62M ⚡
McKenna Mark C.
Chairman, President & CEO · Director
Date
Jun 2
Shares
3
Price
$1.70
Value
$5
McKenna Mark C.
Chairman, President & CEO · Director
Date
Jun 2
Shares
122,528
Price
$2.90
Value
$355K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About RXDX insider trading
RXDX insider trades
Prometheus Biosciences, Inc. (RXDX) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including RXDX. Over the past 12 months, 0 insiders have filed transactions with the SEC. RXDX insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Prometheus Biosciences, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
RXDX insider trading · 5 questionsThe insiders of Prometheus Biosciences, Inc. (RXDX) include executives and directors such as RXDX, among others. Over the past 12 months, 0 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026