CASTLE BIOSCIENCES (CSTL) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$34.42
+2.1% on the day
+45.5% over 12 months
52-week range $18.15 – $43.04
Share price and insider trades
CSTL closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$19.3M
Insiders buying0
Insiders selling5
CASTLE BIOSCIENCES insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $19.3M of CSTL stock on the open market.
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CSTL insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | $665K | 5 |
| Q3 2026 | — | 0 | $8.1M | 95 |
| Q2 2026 | — | 0 | $1.1M | 57 |
| Q1 2026 | — | 0 | $4.1M | 32 |
| Q4 2025 | — | 0 | $5.0M | 27 |
| Q3 2025 | — | 0 | $391K | 1 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.9×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 CASTLE BIOSCIENCES INC insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $19.3M. 207 of 217 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Oct 7SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 8,58021,064 held (−29%) | $35.57 | $305K | -3.2% | — |
| Oct 7SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,1988,038 held (−28%) | $35.57 | $114K | -3.2% | — |
| Oct 7SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,7186,832 held (−28%) | $35.57 | $97K | -3.2% | — |
| Oct 5SEC | Kristen M OelschlagerCOO | Sell Plan | 2,80714,702 held (−16%) | $35.75 | $100K | -3.7% | — |
| Oct 5SEC | Kristen M OelschlagerCOO | Sell Plan | 1,34613,356 held (−9%) | $36.38 | $49K | -5.4% | — |
| Oct 1SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 5,54353,041 held (−9%) | $35.50 | $197K | -3.0% | — |
| Oct 1SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,03452,007 held (−2%) | $34.20 | $35K | +0.6% | — |
| Sep 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 8,58021,479 held (−29%) | $35.33 | $303K | -2.6% | — |
| Sep 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,19811,236 held (−22%) | $35.33 | $113K | -2.6% | — |
| Sep 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,7189,550 held (−22%) | $35.33 | $96K | -2.6% | — |
| Sep 16SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 3,29458,584 held (−5%) | $35.14 | $116K | -2.0% | — |
| Sep 16SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 3,30661,878 held (−5%) | $32.32 | $107K | +6.5% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 8,36121,702 held (−28%) | $32.00 | $268K | +7.6% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,12414,517 held (−18%) | $32.00 | $100K | +7.6% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,65612,339 held (−18%) | $32.00 | $85K | +7.6% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 22321,479 held (−1%) | $32.78 | $7K | +5.0% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 8314,434 held (−1%) | $32.78 | $3K | +5.0% | — |
| Sep 15SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 7112,268 held (−1%) | $32.78 | $2K | +5.0% | — |
| Sep 3SEC | Kristen M OelschlagerCOO | Sell Plan | 3,95213,556 held (−23%) | $33.36 | $132K | +3.2% | — |
| Sep 3SEC | Kristen M OelschlagerCOO | Sell Plan | 20013,356 held (−1%) | $34.02 | $7K | +1.2% | — |
| Sep 2SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,73065,184 held (−3%) | $32.81 | $57K | +4.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 11,47222,435 held (−34%) | $33.14 | $380K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,50517,850 held (−12%) | $33.14 | $83K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,12915,172 held (−12%) | $33.14 | $71K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 95621,479 held (−4%) | $33.88 | $32K | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 25711,277 held (−2%) | $33.14 | $9K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 25711,277 held (−2%) | $33.14 | $9K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 25711,277 held (−2%) | $33.14 | $9K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 25711,277 held (−2%) | $33.14 | $9K | +3.9% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 20917,641 held (−1%) | $33.88 | $7K | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 17714,995 held (−1%) | $33.88 | $6K | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2111,256 held (−0%) | $33.88 | $711 | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2111,256 held (−0%) | $33.88 | $711 | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2111,256 held (−0%) | $33.88 | $711 | +1.6% | — |
| Sep 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2111,256 held (−0%) | $33.88 | $711 | +1.6% | — |
| Aug 27SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 9,05066,914 held (−12%) | $35.04 | $317K | -1.8% | — |
| Aug 26SEC | Kristen M OelschlagerCOO | Sell | 12,21885,033 held (−13%) | $33.69 | $412K | +2.2% | — |
| Aug 26SEC | Kristen M OelschlagerCOO | Sell | 7,16177,872 held (−8%) | $34.26 | $245K | +0.5% | — |
| Aug 26SEC | Kristen M OelschlagerCOO | Sell | 5,22372,649 held (−7%) | $34.64 | $181K | -0.6% | — |
| Aug 19SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,73075,964 held (−2%) | $29.59 | $51K | +16.3% | — |
| Aug 18SEC | Frank StokesCFO | Sell | 24,90835,177 held (−41%) | $29.77 | $742K | +15.6% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,71420,355 held (−12%) | $30.02 | $81K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,30617,301 held (−12%) | $30.02 | $69K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,10021,479 held (−5%) | $30.02 | $33K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27811,534 held (−2%) | $30.02 | $8K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27811,534 held (−2%) | $30.02 | $8K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27811,534 held (−2%) | $30.02 | $8K | +14.7% | — |
| Aug 18SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27811,534 held (−2%) | $30.02 | $8K | +14.7% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 11,93521,479 held (−36%) | $31.34 | $374K | +9.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 8,42133,414 held (−20%) | $30.79 | $259K | +11.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4,78223,625 held (−17%) | $31.34 | $150K | +9.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4,06320,080 held (−17%) | $31.34 | $127K | +9.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,37428,407 held (−11%) | $30.79 | $104K | +11.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,86624,143 held (−11%) | $30.79 | $88K | +11.8% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,54621,479 held (−11%) | $30.68 | $78K | +12.2% | — |
| Aug 6SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,30177,694 held (−2%) | $38.39 | $50K | -10.3% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 55623,069 held (−2%) | $30.68 | $17K | +12.2% | — |
| Aug 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 47319,607 held (−2%) | $30.68 | $15K | +12.2% | — |
| Aug 5SEC | Kristen M OelschlagerCOO | Sell Plan | 4,48614,388 held (−24%) | $30.00 | $135K | +14.7% | — |
| Aug 5SEC | Kristen M OelschlagerCOO | Sell Plan | 3,00018,874 held (−14%) | $29.12 | $87K | +18.2% | — |
| Aug 5SEC | Kristen M OelschlagerCOO | Sell Plan | 1,10013,288 held (−8%) | $30.62 | $34K | +12.4% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 10,66421,479 held (−33%) | $30.35 | $324K | +13.4% | — |
| Aug 4SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 8,14989,886 held (−8%) | $28.84 | $235K | +19.3% | — |
| Aug 4SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 7,27082,616 held (−8%) | $29.58 | $215K | +16.4% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 6,48021,479 held (−23%) | $30.15 | $195K | +14.2% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4,23231,781 held (−12%) | $30.35 | $128K | +13.4% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,59727,009 held (−12%) | $30.35 | $109K | +13.4% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,98336,013 held (−5%) | $30.15 | $60K | +14.2% | — |
| Aug 4SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,89180,725 held (−2%) | $30.26 | $57K | +13.7% | — |
| Aug 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,69030,606 held (−5%) | $30.15 | $51K | +14.2% | — |
| Aug 4SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 1,73078,995 held (−2%) | $28.25 | $49K | +21.8% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 5,98221,711 held (−22%) | $24.13 | $144K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,30738,046 held (−3%) | $24.13 | $32K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,11032,339 held (−3%) | $24.13 | $27K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 26811,822 held (−2%) | $24.13 | $6K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 26811,822 held (−2%) | $24.13 | $6K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 26811,822 held (−2%) | $24.13 | $6K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 26811,822 held (−2%) | $24.13 | $6K | +42.6% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 23221,479 held (−1%) | $25.06 | $6K | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 5037,996 held (−0%) | $25.06 | $1K | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4332,296 held (−0%) | $25.06 | $1K | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1011,812 held (−0%) | $25.06 | $251 | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1011,812 held (−0%) | $25.06 | $251 | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1011,812 held (−0%) | $25.06 | $251 | +37.4% | — |
| Jul 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1011,812 held (−0%) | $25.06 | $251 | +37.4% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35739,353 held (−3%) | $22.92 | $31K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15333,449 held (−3%) | $22.92 | $26K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 55021,479 held (−2%) | $22.92 | $13K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,090 held (−2%) | $22.92 | $6K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,090 held (−2%) | $22.92 | $6K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,090 held (−2%) | $22.92 | $6K | +50.2% | — |
| Jul 16SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,090 held (−2%) | $22.92 | $6K | +50.2% | — |
| Jul 6SEC | Kristen M OelschlagerCOO | Sell Plan | 8,18622,274 held (−27%) | $24.40 | $200K | +41.1% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 6,21421,479 held (−22%) | $24.29 | $151K | +41.7% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35740,710 held (−3%) | $24.29 | $33K | +41.7% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15334,602 held (−3%) | $24.29 | $28K | +41.7% | — |
| Jul 6SEC | Kristen M OelschlagerCOO | Sell Plan | 40021,874 held (−2%) | $24.78 | $10K | +38.9% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,368 held (−2%) | $24.29 | $7K | +41.7% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,368 held (−2%) | $24.29 | $7K | +41.7% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,368 held (−2%) | $24.29 | $7K | +41.7% | — |
| Jul 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,368 held (−2%) | $24.29 | $7K | +41.7% | — |
| Jun 18SEC | Kristen M OelschlagerCOO | Sell Plan | 8,58730,460 held (−22%) | $20.71 | $178K | +66.2% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35742,067 held (−3%) | $20.66 | $28K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15335,755 held (−3%) | $20.66 | $24K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 55021,479 held (−2%) | $20.66 | $11K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,646 held (−2%) | $20.66 | $6K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,646 held (−2%) | $20.66 | $6K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,646 held (−2%) | $20.66 | $6K | +66.6% | — |
| Jun 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27812,646 held (−2%) | $20.66 | $6K | +66.6% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 6,21421,479 held (−22%) | $20.86 | $130K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35743,424 held (−3%) | $20.86 | $28K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15336,908 held (−3%) | $20.86 | $24K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2781,668 held (−14%) | $20.86 | $6K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2781,668 held (−14%) | $20.86 | $6K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2781,668 held (−14%) | $20.86 | $6K | +65.0% | — |
| Jun 3SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2781,668 held (−14%) | $20.86 | $6K | +65.0% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,03544,781 held (−2%) | $20.20 | $21K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 88038,061 held (−2%) | $20.20 | $18K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 42021,479 held (−2%) | $20.20 | $8K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 32245,816 held (−1%) | $20.00 | $6K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 27338,941 held (−1%) | $20.00 | $5K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2121,946 held (−10%) | $20.20 | $4K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2121,946 held (−10%) | $20.20 | $4K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2121,946 held (−10%) | $20.20 | $4K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2121,946 held (−10%) | $20.20 | $4K | +70.4% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 13021,479 held (−1%) | $20.00 | $3K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 662,158 held (−3%) | $20.00 | $1K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 662,158 held (−3%) | $20.00 | $1K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 662,158 held (−3%) | $20.00 | $1K | +72.1% | — |
| May 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 662,158 held (−3%) | $20.00 | $1K | +72.1% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 5,30822,385 held (−19%) | $22.08 | $117K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15946,336 held (−2%) | $22.08 | $26K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 98539,382 held (−2%) | $22.08 | $22K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 90621,479 held (−4%) | $22.59 | $20K | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2372,265 held (−9%) | $22.08 | $5K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2372,265 held (−9%) | $22.08 | $5K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2372,265 held (−9%) | $22.08 | $5K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2372,265 held (−9%) | $22.08 | $5K | +55.9% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 19846,138 held (−0%) | $22.59 | $4K | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 16839,214 held (−0%) | $22.59 | $4K | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 412,224 held (−2%) | $22.59 | $926 | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 412,224 held (−2%) | $22.59 | $926 | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 412,224 held (−2%) | $22.59 | $926 | +52.4% | — |
| May 11SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 412,224 held (−2%) | $22.59 | $926 | +52.4% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35747,495 held (−3%) | $25.10 | $34K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15340,367 held (−3%) | $25.10 | $29K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 55021,479 held (−2%) | $25.10 | $14K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,502 held (−10%) | $25.10 | $7K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,502 held (−10%) | $25.10 | $7K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,502 held (−10%) | $25.10 | $7K | +37.1% | — |
| Apr 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,502 held (−10%) | $25.10 | $7K | +37.1% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 6,21421,479 held (−22%) | $25.03 | $156K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35748,852 held (−3%) | $25.03 | $34K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15341,520 held (−3%) | $25.03 | $29K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,780 held (−9%) | $25.03 | $7K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,780 held (−9%) | $25.03 | $7K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,780 held (−9%) | $25.03 | $7K | +37.5% | — |
| Apr 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2782,780 held (−9%) | $25.03 | $7K | +37.5% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35750,209 held (−3%) | $25.55 | $35K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,15342,673 held (−3%) | $25.55 | $29K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 55021,479 held (−2%) | $25.55 | $14K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2783,058 held (−8%) | $25.55 | $7K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2783,058 held (−8%) | $25.55 | $7K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2783,058 held (−8%) | $25.55 | $7K | +34.7% | — |
| Mar 30SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2783,058 held (−8%) | $25.55 | $7K | +34.7% | — |
| Mar 19SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 18,65022,129 held (−46%) | $25.93 | $484K | +32.7% | — |
| Mar 19SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 65021,479 held (−3%) | $25.39 | $17K | +35.6% | — |
| Mar 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 17,44940,905 held (−30%) | $25.96 | $453K | +32.6% | — |
| Mar 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 13,20458,354 held (−18%) | $25.45 | $336K | +35.2% | — |
| Mar 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 12640,779 held (−0%) | $26.68 | $3K | +29.0% | — |
| Mar 16SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 20,86386,825 held (−19%) | $25.24 | $527K | +36.4% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 23,17971,558 held (−24%) | $25.28 | $586K | +36.2% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 17,31094,737 held (−15%) | $26.11 | $452K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,35751,566 held (−3%) | $26.11 | $35K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,16043,826 held (−3%) | $26.11 | $30K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2823,336 held (−8%) | $26.11 | $7K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2793,336 held (−8%) | $26.11 | $7K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2793,336 held (−8%) | $26.11 | $7K | +31.8% | — |
| Mar 13SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2793,336 held (−8%) | $26.11 | $7K | +31.8% | — |
| Mar 9SEC | Frank StokesCFO | Sell Plan | 6,00160,085 held (−9%) | $27.98 | $168K | +23.0% | — |
| Mar 9SEC | G Bradley ColeDirector | Sell | 4,74821,964 held (−18%) | $28.44 | $135K | +21.0% | — |
| Mar 9SEC | G Bradley ColeDirector | Sell | 2,65519,309 held (−12%) | $28.51 | $76K | +20.7% | — |
| Mar 5SEC | Frank StokesCFO | Sell Plan | 5,30054,183 held (−9%) | $27.32 | $145K | +26.0% | — |
| Mar 5SEC | Frank StokesCFO | Sell Plan | 1,70052,483 held (−3%) | $27.81 | $47K | +23.8% | — |
| Feb 5SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 3,20084,515 held (−4%) | $39.91 | $128K | -13.8% | — |
| Feb 5SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 64683,869 held (−1%) | $37.82 | $24K | -9.0% | — |
| Feb 5SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 17183,698 held (−0%) | $38.61 | $7K | -10.9% | — |
| Jan 22SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4,01787,715 held (−4%) | $40.01 | $161K | -14.0% | — |
| Jan 7SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,67830,852 held (−8%) | $38.09 | $102K | -9.6% | — |
| Jan 7SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,33929,513 held (−4%) | $40.10 | $54K | -14.2% | — |
| Dec 29SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 83033,530 held (−2%) | $40.35 | $33K | -14.7% | — |
| Dec 19SEC | Kristen M OelschlagerCOO | Sell | 14,88812,323 held (−55%) | $39.31 | $585K | -12.4% | — |
| Dec 19SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 50934,360 held (−1%) | $40.04 | $20K | -14.0% | — |
| Dec 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 18,51348,702 held (−28%) | $38.75 | $717K | -11.2% | — |
| Dec 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 12,82134,869 held (−27%) | $38.55 | $494K | -10.7% | — |
| Dec 17SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,01247,690 held (−2%) | $39.30 | $40K | -12.4% | — |
| Dec 15SEC | Tobin W JuvenalChief Commercial Officer | Sell | 13,20086,825 held (−13%) | $37.48 | $495K | -8.2% | — |
| Dec 15SEC | Frank StokesCFO | Sell | 4,49650,326 held (−8%) | $37.45 | $168K | -8.1% | — |
| Dec 8SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,33937,547 held (−3%) | $40.03 | $54K | -14.0% | — |
| Dec 4SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,67838,886 held (−6%) | $39.23 | $105K | -12.3% | — |
| Dec 1SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 4,25841,564 held (−9%) | $40.09 | $171K | -14.1% | — |
| Nov 26SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 5,11545,822 held (−10%) | $40.05 | $205K | -14.1% | — |
| Nov 24SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 4,69384,595 held (−5%) | $35.58 | $167K | -3.3% | — |
| Nov 20SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,67850,937 held (−5%) | $34.02 | $91K | +1.2% | — |
| Nov 14SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 50084,527 held (−1%) | $35.39 | $18K | -2.7% | — |
| Nov 14SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 20084,527 held (−0%) | $35.40 | $7K | -2.8% | — |
| Nov 13SEC | Kristen M OelschlagerCOO | Sell Plan | 18,93212,323 held (−61%) | $35.10 | $665K | -1.9% | — |
| Nov 13SEC | Frank StokesCFO | Sell Plan | 5,38843,328 held (−11%) | $35.08 | $189K | -1.9% | — |
| Nov 13SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 50084,027 held (−1%) | $35.39 | $18K | -2.7% | — |
| Nov 13SEC | Tobin W JuvenalChief Commercial Officer | Sell Plan | 20083,827 held (−0%) | $35.40 | $7K | -2.8% | — |
| Nov 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 6,45856,530 held (−10%) | $30.41 | $196K | +13.2% | — |
| Nov 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 2,67853,615 held (−5%) | $31.85 | $85K | +8.1% | — |
| Nov 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 23756,293 held (−0%) | $31.12 | $7K | +10.6% | — |
| Nov 4SEC | Kristen M OelschlagerCOO | Sell | 18,007100,937 held (−15%) | $21.69 | $391K | +58.7% | — |
| Nov 4SEC | Kristen M OelschlagerCOO | Sell Plan | 12,67827,569 held (−32%) | $25.04 | $317K | +37.5% | — |
| Oct 23SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,33962,988 held (−2%) | $22.44 | $30K | +53.4% | — |
| Oct 6SEC | Derek J MaetzoldPres. & Chief Exec. Officer | Sell Plan | 1,33964,327 held (−2%) | $22.58 | $30K | +52.4% | — |
Insiders at CASTLE BIOSCIENCES INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Derek J MaetzoldPres. & Chief Exec. Officer | — | $11.2M | Oct 7, 2026 | — |
| Kristen M OelschlagerCOO | — | $3.7M | Oct 5, 2026 | — |
| Tobin W JuvenalChief Commercial Officer | — | $2.7M | Oct 1, 2026 | — |
| Frank StokesCFO | — | $1.5M | Aug 18, 2026 | — |
| G Bradley ColeDirector | — | $211K | Mar 9, 2026 | — |
CSTL stock: common questions
Are CASTLE BIOSCIENCES INC insiders buying CSTL stock?
In the past 12 months, 0 insiders reported open-market purchases of CSTL worth $0.
Are CASTLE BIOSCIENCES INC insiders selling CSTL stock?
5 insiders reported sales worth $19.3M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is CSTL's 52-week range?
Over the past year CSTL has traded between $18.15 and $43.04. It last closed at $34.42 on Oct 9, 2026.