Sijbrandij Sytse

Insider

Director

Trades at: GTLB

30D 90D 1Y

Net shares · 365d

-1.1M

0 buy · 1.1M sell

Net value · 365d

-$38.8M

$0 in · $38.8M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 1.1M 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

GTLB Sell·S
Jun 15, 26

Director · 10b5-1

$3.3M

116.2K sh · $28.44 avg · 2 lots

Own -1%
GTLB Sell·S
May 18, 26

Director · 10b5-1

$2.9M

116.2K sh · $24.85 avg · 2 lots

Own -1%
GTLB Sell·S
Apr 15, 26

Director · 10b5-1

$2.4M

116.2K sh · $20.77

Own -100%
GTLB Sell·S
Feb 17, 26

Director,TenPercentOwner · 10b5-1

$1.5M

54.3K sh · $28.41 avg · 2 lots

Own -95%
GTLB Sell·S
Jan 14, 26

Director,TenPercentOwner · 10b5-1

$2.0M

54.3K sh · $35.96 avg · 2 lots

Own -100%
GTLB Sell·S
Dec 15, 25

Director,TenPercentOwner · 10b5-1

$2.1M

54.3K sh · $38.95 avg · 2 lots

Own -99%
GTLB Sell·S
Nov 17, 25

Director,TenPercentOwner · 10b5-1

$4.7M

108.6K sh · $43.17 avg · 2 lots

Own -100%
GTLB Sell·S
Oct 15, 25

Director,TenPercentOwner · 10b5-1

$4.8M

108.6K sh · $44.29 avg · 2 lots

Own -100%
GTLB Sell·S
Sep 15, 25

Director,TenPercentOwner · 10b5-1

$5.4M

108.6K sh · $50.14 avg · 2 lots

Own -79%
GTLB Sell·S
Aug 18, 25

Director,TenPercentOwner · 10b5-1

$4.9M

108.6K sh · $45.16 avg · 3 lots

Own -100%
GTLB Sell·S
Jul 15, 25

Director,TenPercentOwner · 10b5-1

$4.7M

108.6K sh · $43.33 avg · 2 lots

Own -90%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Jun 15, 2026	GTLB	Director	Sell S	116.2K · 2 lots	-1%	$28.44 avg	$3.3M
May 18, 2026	GTLB	Director	Sell S	116.2K · 2 lots	-1%	$24.85 avg	$2.9M
Apr 15, 2026	GTLB	Director	Sell S	116.2K	-100%	$20.77	$2.4M
Feb 17, 2026	GTLB	Director,TenPercentOwner	Sell S	54.3K · 2 lots	-95%	$28.41 avg	$1.5M
Jan 14, 2026	GTLB	Director,TenPercentOwner	Sell S	54.3K · 2 lots	-100%	$35.96 avg	$2.0M
Dec 15, 2025	GTLB	Director,TenPercentOwner	Sell S	54.3K · 2 lots	-99%	$38.95 avg	$2.1M
Nov 17, 2025	GTLB	Director,TenPercentOwner	Sell S	108.6K · 2 lots	-100%	$43.17 avg	$4.7M
Oct 15, 2025	GTLB	Director,TenPercentOwner	Sell S	108.6K · 2 lots	-100%	$44.29 avg	$4.8M
Sep 15, 2025	GTLB	Director,TenPercentOwner	Sell S	108.6K · 2 lots	-79%	$50.14 avg	$5.4M
Aug 18, 2025	GTLB	Director,TenPercentOwner	Sell S	108.6K · 3 lots	-100%	$45.16 avg	$4.9M
Jul 15, 2025	GTLB	Director,TenPercentOwner	Sell S	108.6K · 2 lots	-90%	$43.33 avg	$4.7M

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

About Sijbrandij Sytse

This profile aggregates every SEC Form 4 insider transaction reported by Sijbrandij Sytse 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.