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- Sijbrandij Sytse
Sijbrandij Sytse
Director, 10% Owner of GTLB
of GTLB
Director10% Owner of GTLB
Executive Chair of the Board of GTLB
Stock Insider Trading Activity of Sijbrandij Sytse
Director, 10% Owner
Avg Cost/Share
$39.27
Shares
54,300
Total Value
$2,114,904.00
Owned After
700
Director, 10% Owner
Avg Cost/Share
$43.29
Shares
108,600
Total Value
$4,688,769.99
Owned After
700
Director, 10% Owner
Avg Cost/Share
$44.43
Shares
108,600
Total Value
$4,809,870.20
Owned After
700
Director, 10% Owner
Avg Cost/Share
$50.24
Shares
108,600
Total Value
$5,444,696.18
Owned After
700
N/A
Avg Cost/Share
$45.26
Shares
108,600
Total Value
$4,904,215.93
Owned After
700
Director10% Owner
Avg Cost/Share
$41.68
Shares
108,600
Total Value
$4,500,383.12
Owned After
700
Executive Chair of the Board
Avg Cost/Share
$53.25
Shares
108,600
Total Value
$5,758,611.18
Owned After
700
Executive Chair of the Board
Avg Cost/Share
$42.87
Shares
108,600
Total Value
$4,655,682.00
Owned After
700
SEC Form 4
Executive Chair of the Board
Avg Cost/Share
$52.06
Shares
56,000
Total Value
$2,909,202.83
Owned After
700
Executive Chair of the Board
Avg Cost/Share
$70.03
Shares
84,000
Total Value
$5,931,194.71
Owned After
700
Executive Chair of the Board
Avg Cost/Share
$63.02
Shares
84,000
Total Value
$5,291,475.79
Owned After
700
Director10% Owner
Avg Cost/Share
$59.45
Shares
84,000
Total Value
$4,984,749.69
Owned After
700
Chief Executive Officer
Avg Cost/Share
$59.85
Shares
280,000
Total Value
$16,872,869.40
Owned After
700
Chief Executive Officer
Avg Cost/Share
$54.86
Shares
56,000
Total Value
$3,062,173.50
Owned After
700
Chief Executive Officer
Avg Cost/Share
$53.55
Shares
56,000
Total Value
$2,987,882.75
Owned After
700
Chief Executive Officer
Avg Cost/Share
$43.18
Shares
56,000
Total Value
$2,393,321.28
Owned After
700
Chief Executive Officer
Avg Cost/Share
$49.25
Shares
56,000
Total Value
$2,743,507.36
Owned After
700
Chief Executive Officer
Avg Cost/Share
$43.53
Shares
56,000
Total Value
$2,437,680.00
Owned After
700
SEC Form 4
Chief Executive Officer
Avg Cost/Share
$55.98
Shares
56,000
Total Value
$3,150,916.95
Owned After
700
Chief Executive Officer
Avg Cost/Share
$55.65
Shares
56,000
Total Value
$3,075,458.49
Owned After
700
Chief Executive Officer
Avg Cost/Share
$54.32
Shares
305,000
Total Value
$16,465,914.16
Owned After
700
Chief Executive Officer
Avg Cost/Share
$74.12
Shares
380,000
Total Value
$28,141,721.87
Owned After
700
Chief Executive Officer
Avg Cost/Share
$62.29
Shares
380,000
Total Value
$23,679,723.28
Owned After
700
Chief Executive Officer
Avg Cost/Share
$63.00
Shares
1,425,567
Total Value
$89,053,667.43
Owned After
700
| Insider | Ticker | Relationship | Date | Transaction | Avg Cost | Shares | Total Value | Owned After | SEC Forms |
|---|---|---|---|---|---|---|---|---|---|
| Sijbrandij Sytse | GTLB | Director, 10% Owner | Dec 15, 2025 | Sell | $39.27 | 54,300 | $2,114,904.00 | 700 | |
| Sijbrandij Sytse | GTLB | Director, 10% Owner | Nov 17, 2025 | Sell | $43.29 | 108,600 | $4,688,769.99 | 700 | |
| Sijbrandij Sytse | GTLB | Director, 10% Owner | Oct 15, 2025 | Sell | $44.43 | 108,600 | $4,809,870.20 | 700 | |
| Sijbrandij Sytse | GTLB | Director, 10% Owner | Sep 15, 2025 | Sell | $50.24 | 108,600 | $5,444,696.18 | 700 | |
| Sijbrandij Sytse | GTLB | N/A | Aug 18, 2025 | Sell | $45.26 | 108,600 | $4,904,215.93 | 700 | |
| Sijbrandij Sytse | GTLB | Director10% Owner | Jun 16, 2025 | Sell | $41.68 | 108,600 | $4,500,383.12 | 700 | |
| Sijbrandij Sytse | GTLB | Executive Chair of the Board | May 14, 2025 | Sell | $53.25 | 108,600 | $5,758,611.18 | 700 | |
| Sijbrandij Sytse | GTLB | Executive Chair of the Board | Apr 15, 2025 | Sell | $42.87 | 108,600 | $4,655,682.00 | 700 | |
| Sijbrandij Sytse | GTLB | Executive Chair of the Board | Mar 17, 2025 | Sell | $52.06 | 56,000 | $2,909,202.83 | 700 | |
| Sijbrandij Sytse | GTLB | Executive Chair of the Board | Feb 18, 2025 | Sell | $70.03 | 84,000 | $5,931,194.71 | 700 | |
| Sijbrandij Sytse | GTLB | Executive Chair of the Board | Jan 15, 2025 | Sell | $63.02 | 84,000 | $5,291,475.79 | 700 | |
| Sijbrandij Sytse | GTLB | Director10% Owner | Dec 16, 2024 | Sell | $59.45 | 84,000 | $4,984,749.69 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Nov 18, 2024 | Sell | $59.85 | 280,000 | $16,872,869.40 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Oct 15, 2024 | Sell | $54.86 | 56,000 | $3,062,173.50 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Sep 16, 2024 | Sell | $53.55 | 56,000 | $2,987,882.75 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Aug 14, 2024 | Sell | $43.18 | 56,000 | $2,393,321.28 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Jul 15, 2024 | Sell | $49.25 | 56,000 | $2,743,507.36 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Jun 17, 2024 | Sell | $43.53 | 56,000 | $2,437,680.00 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | May 15, 2024 | Sell | $55.98 | 56,000 | $3,150,916.95 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Apr 15, 2024 | Sell | $55.65 | 56,000 | $3,075,458.49 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Mar 15, 2024 | Sell | $54.32 | 305,000 | $16,465,914.16 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Feb 14, 2024 | Sell | $74.12 | 380,000 | $28,141,721.87 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Jan 16, 2024 | Sell | $62.29 | 380,000 | $23,679,723.28 | 700 | |
| Sijbrandij Sytse | GTLB | Chief Executive Officer | Dec 15, 2023 | Sell | $63.00 | 1,425,567 | $89,053,667.43 | 700 |