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SM

Samuel Bates Martin

CLDX
SVP AND CFO · CELLDEX THERAPEUTICS, INC. · CIK 0001709024
FILING MIX · LIFETIME47%/53%
BUYS
22
SELLS
25
TOTAL VALUE
$4.34M
COMPANIES
1
ACTIVE SINCE
Jun 2020
HOLDINGS NOW
93,000
AVG SELL PX
$36.92
TRADE KIND
SHOWING 47 / 47
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
12 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Samuel Bates Martin, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d12+83.33%+16.21%+0.06%+16.15%-3.14%—
14d12+66.67%+20.54%-1.06%+21.60%-7.75%—
30d12+66.67%+21.74%-0.88%+22.62%-8.31%—
60d12+75.00%+13.34%-5.23%+18.57%-5.32%—
90d12+58.33%+19.39%-1.81%+21.20%+6.09%—
180d12+66.67%+32.33%-0.69%+33.02%-16.79%—
1y12+91.67%+57.65%+2.78%+54.87%-18.13%—
2y12+100.00%+36.44%+17.47%+22.79%-38.14%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CLDX · 93,000 shares · as of Jun 25, 2026
026,40052,80079,200105,600202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 22 buys / 25 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
93,000——93,000Jun 25, 2026Jun 29, 2026 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
4,817$10.38$50.0K32,942Jan 2, 2026Jan 6, 2026 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
4,817——58,815Jan 2, 2026Jan 6, 2026 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
81,000——81,000Jun 5, 2025Jun 9, 2025 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
3,201——0Jun 14, 2024Jun 18, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
16,968$10.38$176.1K45,297Jun 14, 2024Jun 18, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
17,172$35.42$608.3K28,125Jun 14, 2024Jun 18, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
16,968——63,632Jun 14, 2024Jun 18, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
3,201$9.02$28.9K28,329Jun 14, 2024Jun 18, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
81,000——81,000Jun 13, 2024Jun 17, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
25,000$10.38$259.5K60,128May 30, 2024Jun 3, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
35,000$34.05$1.19M25,128May 30, 2024Jun 3, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
25,000——80,600May 30, 2024Jun 3, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
10,750$2.78$29.9K35,128Jan 2, 2024Jan 4, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
10,750——0Jan 2, 2024Jan 4, 2024 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
80,000——80,000Jun 15, 2023Jun 20, 2023 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
13,671$2.78$38.0K41,925Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
3,876$9.02$34.9K28,254Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
1,221$34.62$42.3K24,378Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
3,876——3,201Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
2,065$35.38$73.1K25,599Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
14,261$36.76$524.3K27,664Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
13,671——10,750Aug 12, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
2,453——7,077Aug 11, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP AND CFO
2,453$37.04$90.9K24,378Aug 11, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP AND CFO
2,453$9.02$22.1K26,831Aug 11, 2022Aug 15, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
85,000——85,000Jun 16, 2022Jun 17, 2022 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
3,250——9,530Dec 23, 2021Dec 28, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
3,750——24,421Dec 23, 2021Dec 28, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
3,250$9.02$29.3K30,128Dec 23, 2021Dec 28, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
9,500$42.00$399.0K24,378Dec 23, 2021Dec 28, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
3,750$2.78$10.4K33,878Dec 23, 2021Dec 28, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
3,250$9.02$29.3K32,628Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
3,250——12,780Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
3,750$2.78$10.4K36,378Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
3,750——28,171Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
7,452$43.92$327.3K28,926Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
2,048$42.27$86.6K26,878Nov 15, 2021Nov 17, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
10,302——16,030Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
11,079——31,921Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
2,056$45.25$93.0K18,981Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
11,079$2.78$30.8K30,060Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
SALE
SVP and CFO
682$45.25$30.9K29,378Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
10,302$9.02$92.9K21,037Aug 10, 2021Aug 12, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
85,000——85,000Jun 17, 2021Jun 21, 2021 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
105,600——105,600Jun 18, 2020Jun 19, 2020 ↗View →
CLDX
CELLDEX THERAPEUTICS, INC.
PURCHASE
SVP and CFO
9,750$3.05$29.7K10,735Jun 9, 2020Jun 10, 2020 ↗View →
Other insiders · CLDX
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About this filer
CIK 0001709024
ROLE
SVP AND CFO
PRIMARY
CLDX
COMPANIES
1
ACTIVE SINCE
Jun 2020
MARKETPEEL · /INSIDER/0001709024DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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One short email. Insider buys, congressional trades, and plain-English analysis.

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