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Insider Trading Intelligence
Pricing
…
MG

Michelle Gilson

ACLX
CHIEF FINANCIAL OFFICER · ARCELLX, INC. · CIK 0001930862
FILING MIX · LIFETIME31%/69%
BUYS
29
SELLS
66
TOTAL VALUE
$13.48M
COMPANIES
1
ACTIVE SINCE
May 2022
HOLDINGS NOW
0
AVG SELL PX
$72.44
TRADE KIND
SHOWING 95 / 95
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
39 backtested trades · 8 horizons · 45 pending
Forward-return performance of every backtestable P/S trade by Michelle Gilson, 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
7d39+43.59%+5.29%+0.07%+5.22%+0.89%1.31
14d39+53.85%+4.87%+1.48%+3.39%-4.12%0.80
30d39+58.97%+3.99%+1.20%+2.79%-8.61%0.57
60d39+64.10%+2.04%+2.01%+0.03%-6.03%0.01
90d39+75.76%-13.50%+0.93%-13.27%-12.42%-3.45
180d39(6 pending)+60.61%-1.52%+5.23%-6.75%-15.82%-1.48
1y39(9 pending)+53.57%-1.31%+17.76%-18.52%-20.19%—
2y39(30 pending)+0.00%+49.08%+39.32%+8.64%+4.85%—
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
ACLX · 0 shares · as of Apr 28, 2026
025,87951,75877,636103,5152023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 29 buys / 66 sellsCOVERAGE · 17 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
94,596——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,000——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
61,590——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
32,500——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
59,028——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
70,796——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
40,205——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
20,496——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
59,028——59,028Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
67,048——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
88,542——0Apr 28, 2026Apr 28, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
2,110$8.66$18.3K67,048Apr 16, 2026Apr 17, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
2,110——40,205Apr 16, 2026Apr 17, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
36,000$8.66$311.8K64,938Apr 15, 2026Apr 17, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
36,000——42,315Apr 15, 2026Apr 17, 2026 ↗View →
ACLX
ARCELLX, INC.
SALEGRANT
Gift
5,000——28,938Mar 17, 2026Mar 19, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
11,219$113.82$1.28M33,938Feb 25, 2026Feb 25, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
100$69.38$6.9K45,157Feb 19, 2026Feb 19, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
2,879$67.73$195.0K50,662Feb 19, 2026Feb 19, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,405$68.57$370.6K45,257Feb 19, 2026Feb 19, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
4,150$70.01$290.6K53,541Feb 17, 2026Feb 18, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
7,141$69.21$494.2K57,691Feb 17, 2026Feb 18, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,530——64,832Jan 6, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
20,530——61,590Jan 6, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,530——64,832Jan 6, 2026Feb 25, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
15,340——44,302Jan 3, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
15,340——0Jan 3, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
15,340——44,302Jan 3, 2026Feb 19, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
88,542——88,542Jan 2, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,496——28,962Jan 2, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
20,496——20,496Jan 2, 2026Jan 6, 2026 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,496——28,962Jan 2, 2026Feb 18, 2026 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
5,364$91.04$488.3K8,466Oct 15, 2025Oct 15, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
1,064$86.22$91.7K13,830Oct 6, 2025Oct 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
4,882$86.00$419.9K14,894Oct 3, 2025Oct 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
3,786$63.62$240.9K28,225May 27, 2025May 28, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
8,449$64.38$543.9K19,776May 27, 2025May 28, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
22,429——32,011May 23, 2025May 28, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
22,429——0May 23, 2025May 28, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
3,997$73.69$294.6K9,582Jan 8, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
2,327$77.06$179.3K18,339Jan 7, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
1,546$75.23$116.3K22,917Jan 7, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
2,251$76.64$172.5K20,666Jan 7, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
4,760$75.53$359.5K13,579Jan 7, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
3,128$74.43$232.8K24,463Jan 7, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
82,120——82,120Jan 6, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,102$77.17$393.7K28,230Jan 6, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,621$77.17$433.8K27,591Jan 6, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
15,339——38,834Jan 3, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
15,339——15,340Jan 3, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
15,339——15,340Jan 3, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,502$79.55$437.7K33,332Jan 3, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
15,339——38,834Jan 3, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
5,622$79.55$447.2K33,212Jan 3, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,495——23,495Jan 2, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
20,495——40,992Jan 2, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
20,495——23,495Jan 2, 2025Jan 6, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
20,495——40,992Jan 2, 2025Jan 10, 2025 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
3,000——78,315Nov 19, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
3,000$8.66$26.0K3,000Nov 19, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
500$89.17$44.6K200Nov 15, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
100$95.00$9.5K0Nov 15, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
100$91.67$9.2K100Nov 15, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
1,061$87.89$93.3K700Nov 15, 2024Nov 19, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
7,200——81,315Nov 8, 2024Nov 12, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
1,853$101.27$187.6K2,562Nov 8, 2024Nov 12, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
9,700$100.26$972.6K4,415Nov 8, 2024Nov 12, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
7,200$8.66$62.4K14,115Nov 8, 2024Nov 12, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
801$102.33$82.0K1,761Nov 8, 2024Nov 12, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
15,000——88,515Sep 17, 2024Sep 17, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
6,274$77.51$486.3K15,641Sep 17, 2024Sep 17, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
15,000$8.66$129.9K21,915Sep 17, 2024Sep 17, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
8,726$77.88$679.6K6,915Sep 17, 2024Sep 17, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
551$54.25$29.9K6,915Jun 26, 2024Jun 28, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
12,326$53.68$661.6K7,466Jun 26, 2024Jun 28, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
12,121$50.71$614.7K19,792May 24, 2024May 24, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
CHIEF FINANCIAL OFFICER
22,428——31,913May 23, 2024May 24, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
CHIEF FINANCIAL OFFICER
22,428——22,429May 23, 2024May 24, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
3,043$69.73$212.2K9,485Mar 18, 2024Mar 18, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE10b5-1
10b5-1 plan
3,782$69.03$261.1K12,528Mar 18, 2024Mar 18, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
8,514$55.27$470.6K16,310Jan 4, 2024Jan 8, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
15,339——30,679Jan 3, 2024Jan 4, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
94,596——94,596Jan 2, 2024Jan 4, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
61,487——61,487Jan 2, 2024Jan 4, 2024 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
6,000$42.77$256.6K9,485May 25, 2023May 25, 2023 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
8,554$42.47$363.3K15,635May 24, 2023May 25, 2023 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
150$41.64$6.2K15,485May 24, 2023May 25, 2023 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
Chief Financial Officer
22,428——24,189May 23, 2023May 25, 2023 ↗View →
ACLX
ARCELLX, INC.
SALE
Chief Financial Officer
22,428——44,857May 23, 2023May 25, 2023 ↗View →
ACLX
ARCELLX, INC.
PURCHASE
Chief Financial Officer
15,339——24,824Jan 3, 2023Jan 4, 2024 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
70,796——70,796Jan 3, 2023Jan 5, 2023 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
46,018——46,018Jan 3, 2023Jan 5, 2023 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
32,500——32,500Sep 28, 2022Sep 30, 2022 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
67,285——67,285May 23, 2022May 24, 2022 ↗View →
ACLX
ARCELLX, INC.
PURCHASEGRANT
Stock grant
103,515——103,515May 23, 2022May 24, 2022 ↗View →
Other insiders · ACLX
Loading peer insiders…
About this filer
CIK 0001930862
ROLE
CHIEF FINANCIAL OFFICER
PRIMARY
ACLX
COMPANIES
1
ACTIVE SINCE
May 2022
MARKETPEEL · /INSIDER/0001930862DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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