Over the past 12 months, Sound insiders sold $16,895 of stock on the open market and made no open-market purchases.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Jinnan (Marco) Lai | Chief Executive Officer | 0 | 192,222,300 | 192,222,300 | 100.0% | 23 Apr, 2026 |
| 2 | Ming Zhang | Director | 24,798 | 0 | 24,798 | 0.0% | 06 Apr, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 21 Apr, 2026 | Jinnan (Marco) Lai | Chief Executive Officer | Disposed J | 40,000 | $0.00 | $0 | 7,300 | Indirect |
| 21 Apr, 2026 | Jinnan (Marco) Lai | Chief Executive Officer | Acquired J | 8,000,000 | $0.00 | $0 | 192,215,000 | Indirect |
| 02 Apr, 2026 | Ming Zhang | Director | Disposed S | 1,000 | $16.88 | $16.88K | 23,798 | Direct |
| 02 Apr, 2026 | Ming Zhang | Director | Disposed S | 1 | $15.05 | $15 | 24,798 | Direct |