GILSON MICHELLE

PrivateCIK: 1930862
Location

REDWOOD CITY, CA

GILSON MICHELLE (Chief Financial Officer) sold 17.4% of their position (11.29K shares) of ARCELLX, INC. on the open market

Open‑market sale worth $784.8K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderGILSON MICHELLECIK 1930862
IssuerARCELLX, INC.CIK 1786205
Officer· Chief Financial Officer
Since May 2022
+9.21K
Net shares
Net buyer
$784.8K
Total sold
2
Open market trades
0B · 2S
3
Total transactions
20.50K acquired · 11.29K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+20.50K

Price / share

Trade value

% of position

242.1%
1/2/2026
8.47K28.96K

Common Stock

Direct
S · Sale

Shares

7.14K

Price / share

$69.21

Trade value

$494.23K

% of position

11.0%
2/17/2026
64.83K57.69K

Common Stock

Direct
S · Sale

Shares

4.15K

Price / share

$70.01

Trade value

$290.55K

% of position

7.2%
2/17/2026
57.69K53.54K
Total

Net shares

+9.21K

Net value

-$784.78K

Derivative Transactions0
No derivative transactions reported
GILSON MICHELLE — Insider Transaction (Form 4) Filed Feb 18, 2026 | Finecho