Arkolith/Insider Trading/EXPO/Form 4

Corrigan Catherine

President & CEO, DirectorEXPONENT INC (EXPO) · full profile →Form 4 · filed Apr 16, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$529K
Net Open-Market Flow
-$529K
Transactions
12
8 non-derivative · 4 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Apr 15, 2026Option exercise(M)3K$25.41$82K106K
Apr 15, 2026Sell(S)2K$67.70$150K104K
Apr 15, 2026Option exercise(M)2K$29.05$69K106K
Apr 15, 2026Sell(S)2K$67.70$115K104K
Mar 16, 2026Option exercise(M)3K$25.41$82K104K
Mar 16, 2026Sell(S)2K$67.49$149K102K
Mar 16, 2026Option exercise(M)2K$29.05$69K104K
Mar 16, 2026Sell(S)2K$67.49$115K103K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Apr 15, 2026Option exercise(M)3K——6K
Apr 15, 2026Option exercise(M)2K——10K
Mar 16, 2026Option exercise(M)3K——10K
Mar 16, 2026Option exercise(M)2K——12K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000851520-26-000057) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML