Stone Stephen R.

Insider

PRESIDENT AND CEO

Trades at: COSO

30D 90D 1Y

Net shares · 365d

+2.4K

2.4K buy · 0 sell

Net value · 365d

$52.1K

$52.1K in · $0 out

Sentiment · 365d

Net buying

100% buying · 0% selling

Open-market trades · 365d

2.4K buy · 0 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

COSO Exercise·M
Apr 27, 26

PRESIDENT AND CEO

—

17.0K sh

Own New
COSO Other·F
Apr 27, 26

PRESIDENT AND CEO

$128.5K

5.0K sh · $25.59

Own -4%
COSO Exercise·M
Apr 27, 26

PRESIDENT AND CEO

$0

17.0K sh

Own +14%
COSO Buy·P
Mar 9, 26

PRESIDENT AND CEO

$4.8K

200 sh · $24.15

Own +0%
COSO Grant·A
Feb 11, 26

PRESIDENT AND CEO

—

12.0K sh

Own New
COSO Buy·P
Jul 2, 25

PRESIDENT AND CEO

$47.3K

2.2K sh · $21.50

Own +2%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Apr 27, 2026	COSO	PRESIDENT AND CEO	Exercise M	17.0K	New	—	—
Apr 27, 2026	COSO	PRESIDENT AND CEO	Other F	5.0K	-4%	$25.59	$128.5K
Apr 27, 2026	COSO	PRESIDENT AND CEO	Exercise M	17.0K	+14%	—	$0
Mar 9, 2026	COSO	PRESIDENT AND CEO	Buy P	200	+0%	$24.15	$4.8K
Feb 11, 2026	COSO	PRESIDENT AND CEO	Grant A	12.0K	New	—	—
Jul 2, 2025	COSO	PRESIDENT AND CEO	Buy P	2.2K	+2%	$21.50	$47.3K

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

About Stone Stephen R.

This profile aggregates every SEC Form 4 insider transaction reported by Stone Stephen R. 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.