Richard E Buller

Insider

Director

Trades at: CELC

30D 90D 1Y

Net shares · 90d

-12.0K

0 buy · 12.0K sell

Net value · 90d

-$1.6M

$0 in · $1.6M out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 12.0K sell

Net buy / sell volume (all companies)

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions · open-market

Include grants & non-market

CELC Sell·S
May 4, 26

Director · 10b5-1

$52.3K

365 sh · $143.24

Own -5%
CELC Sell·S
May 4, 26

Director · 10b5-1

$401.3K

2.8K sh · $142.04

Own -28%
CELC Sell·S
May 4, 26

Director · 10b5-1

$324.5K

2.3K sh · $141.03

Own -19%
CELC Sell·S
May 4, 26

Director · 10b5-1

$233.1K

1.7K sh · $139.58

Own -12%
CELC Sell·S
May 4, 26

Director · 10b5-1

$76.4K

550 sh · $139.00

Own -4%
CELC Sell·S
May 4, 26

Director · 10b5-1

$176.6K

1.3K sh · $137.00

Own -8%
CELC Sell·S
Mar 31, 26

Director · 10b5-1

$74.8K

675 sh · $110.83

Own -9%
CELC Sell·S
Mar 31, 26

Director · 10b5-1

$256.0K

2.3K sh · $110.11

Own -24%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
May 4, 2026	CELC	Director	Sell S	365	-5%	$143.24	$52.3K
May 4, 2026	CELC	Director	Sell S	2.8K	-28%	$142.04	$401.3K
May 4, 2026	CELC	Director	Sell S	2.3K	-19%	$141.03	$324.5K
May 4, 2026	CELC	Director	Sell S	1.7K	-12%	$139.58	$233.1K
May 4, 2026	CELC	Director	Sell S	550	-4%	$139.00	$76.4K
May 4, 2026	CELC	Director	Sell S	1.3K	-8%	$137.00	$176.6K
Mar 31, 2026	CELC	Director	Sell S	675	-9%	$110.83	$74.8K
Mar 31, 2026	CELC	Director	Sell S	2.3K	-24%	$110.11	$256.0K

About Richard E Buller

This profile aggregates every SEC Form 4 insider transaction reported by Richard E Buller across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.