Buller Richard E

Insider

Director

Trades at: CELC

30D 90D 1Y

Net shares · 365d

-20.0K

0 buy · 20.0K sell

Net value · 365d

-$2.4M

$0 in · $2.4M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 20.0K sell

Trading track record · all companies

Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.

Transactions · 365d

Open-market Buys Sells All types

CELC Other·G
Jun 10, 26

Director

$0

25.0K sh · 2 lots

Own -67%
CELC Grant·A
Jun 5, 26

Director

$0

1.5K sh

Own New
CELC Other·G
May 19, 26

Director

$0

2.1K sh · 2 lots

Own -21%
CELC Exercise·M
May 4, 26

Director · 10b5-1

$0

9.0K sh

Own New
CELC Sell·S
May 4, 26

Director · 10b5-1

$1.3M

9.0K sh · $140.46 avg · 6 lots

Own -57%
CELC Exercise·M
May 4, 26

Director · 10b5-1

$45.9K

9.0K sh · $5.10

Own +133%
CELC Exercise·M
Mar 31, 26

Director · 10b5-1

$0

3.0K sh

Own +45%
CELC Sell·S
Mar 31, 26

Director · 10b5-1

$330.8K

3.0K sh · $110.27 avg · 2 lots

Own -31%
CELC Exercise·M
Mar 31, 26

Director · 10b5-1

$15.3K

3.0K sh · $5.10

Own +44%
CELC Exercise·M
Dec 5, 25

Director

$0

3.0K sh

Own New
CELC Sell·S
Dec 5, 25

Director

$317.1K

3.0K sh · $105.69 avg · 2 lots

Own -31%
CELC Exercise·M
Dec 5, 25

Director

$16.5K

3.0K sh · $5.50

Own +44%
CELC Other·G
Dec 2, 25

Director

$0

500 sh

Own -7%
CELC Exercise·M
Dec 1, 25

Director

$0

1.1K sh

Own +261%
CELC Exercise·M
Dec 1, 25

Director

$16.3K

1.1K sh · $14.83

Own +15%
CELC Sell·S
Dec 1, 25

Director

$107.9K

1.1K sh · $98.13

Own -13%
CELC Exercise·M
Nov 20, 25

Director

$0

3.9K sh

Own New
CELC Sell·S
Nov 20, 25

Director

$377.2K

3.9K sh · $96.73

Own -35%
CELC Exercise·M
Nov 20, 25

Director

$57.8K

3.9K sh · $14.83

Own +54%
CELC Other·G
Nov 19, 25

Director

$0

500 sh

Own -6%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Jun 10, 2026	CELC	Director	Other G	25.0K2 lots	-67%	—	$0
Jun 5, 2026	CELC	Director	Grant A	1.5K	New	—	$0
May 19, 2026	CELC	Director	Other G	2.1K2 lots	-21%	—	$0
May 4, 2026	CELC	Director	Exercise M	9.0K	New	—	$0
May 4, 2026	CELC	Director	Sell S	9.0K6 lots	-57%	$140.46 avg	$1.3M
May 4, 2026	CELC	Director	Exercise M	9.0K	+133%	$5.10	$45.9K
Mar 31, 2026	CELC	Director	Exercise M	3.0K	+45%	—	$0
Mar 31, 2026	CELC	Director	Sell S	3.0K2 lots	-31%	$110.27 avg	$330.8K
Mar 31, 2026	CELC	Director	Exercise M	3.0K	+44%	$5.10	$15.3K
Dec 5, 2025	CELC	Director	Exercise M	3.0K	New	—	$0
Dec 5, 2025	CELC	Director	Sell S	3.0K2 lots	-31%	$105.69 avg	$317.1K
Dec 5, 2025	CELC	Director	Exercise M	3.0K	+44%	$5.50	$16.5K
Dec 2, 2025	CELC	Director	Other G	500	-7%	—	$0
Dec 1, 2025	CELC	Director	Exercise M	1.1K	+261%	—	$0
Dec 1, 2025	CELC	Director	Exercise M	1.1K	+15%	$14.83	$16.3K
Dec 1, 2025	CELC	Director	Sell S	1.1K	-13%	$98.13	$107.9K
Nov 20, 2025	CELC	Director	Exercise M	3.9K	New	—	$0
Nov 20, 2025	CELC	Director	Sell S	3.9K	-35%	$96.73	$377.2K
Nov 20, 2025	CELC	Director	Exercise M	3.9K	+54%	$14.83	$57.8K
Nov 19, 2025	CELC	Director	Other G	500	-6%	—	$0

Buy Sell Non-market (grant · exercise · gift)

About Buller Richard E

This profile aggregates every SEC Form 4 insider transaction reported by Buller Richard E 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.