Who
Brian Grassadonia
Ecosystem Lead
Company insider
Files Form 4 as: Ecosystem Lead, Block.
In numbers
- Trades disclosed
- 246
- Buys
- 0
- Sells
- 78
- Bought
- $0
- Sold
- $94.3M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 2 Mar 2020
- Last trade
- 24 Aug 2026
- Last filed
- 24 Aug 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 24 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $314K3,830 at $81.88 | filing |
| 24 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $360K4,343 at $82.90 | filing |
| 24 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $314K3,830 at $81.88 | filing |
| 24 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $360K4,343 at $82.90 | filing |
| 20 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Code F | $768K9,592 at $80.08 | filing |
| 20 Aug 2026filed 24 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Code F | $768K9,592 at $80.08 | filing |
| 3 Aug 2026filed 5 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $2.1M25,508 at $81.63 | filing |
| 3 Aug 2026filed 5 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $33K400 at $82.23 | filing |
| 3 Aug 2026filed 5 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $2.1M25,508 at $81.63 | filing |
| 3 Aug 2026filed 5 Aug 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $33K400 at $82.23 | filing |
| 2 Jul 2026filed 7 Jul 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $3.5M43,348 at $80.00 | filing |
| 2 Jul 2026filed 7 Jul 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $3.5M43,348 at $80.00 | filing |
| 22 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $340K5,025 at $67.76 | filing |
| 22 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $215K3,141 at $68.41 | filing |
| 22 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $340K5,025 at $67.76 | filing |
| 22 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Sold | $215K3,141 at $68.41 | filing |
| 20 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Code F | $681K9,602 at $70.89 | filing |
| 20 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Code F | $681K9,602 at $70.89 | filing |
| 15 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Code A | $21K438 at $48.46 | filing |
| 15 May 2026filed 22 May 2026 | XYZ BlockSoftware | SEC FORM 4 Code A | $21K438 at $48.46 | filing |
News
Anthropic pitches AI safety bill that may block a model if 50+ people could be killedXYZ · techcrunch.com · 21 Oct 2026Bezos Predicts a 3-Day Workweek, but Social Security's 45-Hour Monthly Rule Could Still Block a Retiree's ChecksXYZ · aol.com · 20 Oct 2026Anthropic pitches Congress on when Washington could block a frontier AI modelXYZ · 247wallst.com · 18 Oct 2026
0 headlines in the last 90 days name Brian Grassadonia; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.