Structure Therapeutics's top three insider shareholders as of August 29, 2026 are Ltd Fil (Other, 6.47Mn shares), Llc Fmr (Other, 5.82Mn shares), Ramy Farid (Director, 3.26Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Ltd Fil | Other | 0 | 6,473,761 | 6,473,761 | 33.0% | 09 Feb, 2023 |
| 2 | Llc Fmr | Other | 0 | 5,816,554 | 5,816,554 | 29.6% | 09 Feb, 2023 |
| 3 | Ramy Farid | Director | 0 | 3,260,495 | 3,260,495 | 16.6% | 09 Feb, 2023 |
| 4 | Jun Yoon | Chief Financial Officer | 1,401,656 | 0 | 1,401,656 | 7.1% | 22 Mar, 2026 |
| 5 | Raymond C Stevens | Chief Executive Officer | 1,401,593 | 0 | 1,401,593 | 7.1% | 22 Mar, 2026 |
| 6 | Crespo Blas Coll | Chief Medical Officer | 280,878 | 0 | 280,878 | 1.4% | 22 Mar, 2026 |
| 7 | Xichen Lin | Chief Scientific Officer | 228,960 | 0 | 228,960 | 1.2% | 19 Aug, 2026 |
| 8 | Matthew Lang | Coo Gc | 184,614 | 0 | 184,614 | 0.9% | 22 Apr, 2026 |
| 9 | Ashley Hall | Chief Development Officer | 155,187 | 0 | 155,187 | 0.8% | 22 Mar, 2026 |
| 10 | John Joseph Berrios | Chief Commercial Officer | 140,766 | 0 | 140,766 | 0.7% | 07 Aug, 2026 |
| 11 | Yingli Ma | Chief Technology Officer | 139,917 | 0 | 139,917 | 0.7% | 22 Mar, 2026 |
| 12 | Daniel G Welch | Director | 0 | 123,508 | 123,508 | 0.6% | 09 Feb, 2023 |
| 13 | Mark Allen Bach | Chief Medical Officer | 26,235 | 0 | 26,235 | 0.1% | 19 Mar, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Acquired M | 11,817 | $0.34 | $4.02K | 240,777 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Disposed C | 11,817 | $0.00 | $0 | 228,960 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Disposed M | 11,817 | $0.00 | $0 | 142,898 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Acquired C | 3,939 | $0.00 | $0 | 3,939 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Disposed S | 3,020 | $53.13 | $160.46K | 919 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Disposed S | 519 | $54.20 | $28.13K | 400 | Direct |
| 18 Aug, 2026 | Xichen Lin | Chief Scientific Officer | Disposed S | 400 | $55.05 | $22.02K | 0 | Direct |
| 06 Aug, 2026 | John Joseph Berrios | Chief Commercial Officer | Acquired A | 140,766 | $0.00 | $0 | 140,766 | Direct |
| 06 Aug, 2026 | John Joseph Berrios | Chief Commercial Officer | Acquired A | 174,612 | $0.00 | $0 | 174,612 | Direct |
| 22 Jul, 2026 | Llc Fmr | TenPercentOwner, Other | Disposed S | 1,367 | $50.07 | $68.45K | 1,369 | Indirect |
| 22 Jul, 2026 | Llc Fmr | TenPercentOwner, Other | Disposed S | 16,085 | $50.07 | $805.38K | 16,086 | Indirect |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Acquired M | 23,634 | $0.34 | $8.04K | 252,594 | Direct |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Disposed C | 23,634 | $0.00 | $0 | 228,960 | Direct |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Disposed M | 23,634 | $0.00 | $0 | 166,532 | Direct |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Acquired C | 7,878 | $0.00 | $0 | 7,878 | Direct |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Disposed S | 6,278 | $50.80 | $318.89K | 1,600 | Direct |
| 14 Jul, 2026 | Xichen Lin | Chief Scientific Officer | Disposed S | 1,600 | $51.71 | $82.73K | 0 | Direct |
| 17 Jun, 2026 | Joanne Waldstreicher | Director | Acquired A | 39,453 | $0.00 | $0 | 39,453 | Direct |
| 17 Jun, 2026 | Eric Dobmeier | Director | Acquired A | 39,453 | $0.00 | $0 | 39,453 | Direct |
| 17 Jun, 2026 | Daniel G Welch | Director | Acquired A | 39,453 | $0.00 | $0 | 39,453 | Direct |