Brilliant Earth's top three insider shareholders as of September 29, 2026 are Beth Tamara Gerstein (Chief Executive Officer, 49.12Mn shares), Eric Scott Grossberg (Executive Chairman, 49.12Mn shares), Rocks, Inc. Just (TenPercentOwner, 49.12Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eric Scott Grossberg | Executive Chairman | 0 | 49,129,976 | 49,129,976 | 22.9% | 19 Aug, 2026 |
| 2 | Beth Tamara Gerstein | Chief Executive Officer | 10,000 | 49,119,976 | 49,129,976 | 22.9% | 19 Aug, 2026 |
| 3 | Rocks, Inc. Just | TenPercentOwner | 49,119,976 | 0 | 49,119,976 | 22.9% | 16 Feb, 2022 |
| 4 | Gavin Turner | Director, TenPercentOwner | 0 | 31,848,071 | 31,848,071 | 14.9% | 26 Aug, 2026 |
| 5 | Gp Iii, Llc Mainsail | TenPercentOwner | 0 | 31,848,071 | 31,848,071 | 14.9% | 26 Aug, 2026 |
| 6 | Jeffrey Chuenhong Kuo | Chief Financial Officer | 1,398,002 | 0 | 1,398,002 | 0.7% | 17 Aug, 2026 |
| 7 | Beth J Kaplan | Director | 549,000 | 0 | 549,000 | 0.3% | 18 Jun, 2026 |
| 8 | Sharon Dziesietnik | Chief Operations Officer | 532,448 | 0 | 532,448 | 0.2% | 19 Aug, 2026 |
| 9 | Attica Jaques | Director | 315,653 | 0 | 315,653 | 0.1% | 18 Jun, 2026 |
| 10 | Ian Bickley | Director | 271,582 | 0 | 271,582 | 0.1% | 23 Jun, 2025 |
| 11 | Jennifer Noel Harris | Director | 255,181 | 0 | 255,181 | 0.1% | 23 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 24 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Acquired J | 16,014 | — | — | 31,848,071 | Indirect |
| 24 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Acquired J | 16,014 | — | — | 31,848,071 | Indirect |
| 24 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Acquired J | 16,014 | — | — | 31,848,071 | Indirect |
| 24 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Acquired J | 16,014 | — | — | 31,848,071 | Indirect |
| 18 Aug, 2026 | Eric Scott Grossberg | Executive Chairman | Acquired P | 9,619 | $1.27 | $12.22K | 9,619 | Indirect |
| 18 Aug, 2026 | Beth Tamara Gerstein | Chief Executive Officer | Acquired P | 6,797 | $1.25 | $8.50K | 6,797 | Direct |
| 17 Aug, 2026 | Sharon Dziesietnik | Chief Operations Officer | Disposed S | 10,124 | $1.27 | $12.86K | 532,448 | Direct |
| 19 Aug, 2026 | Eric Scott Grossberg | Executive Chairman | Acquired P | 381 | $1.26 | $480 | 10,000 | Indirect |
| 19 Aug, 2026 | Beth Tamara Gerstein | Chief Executive Officer | Acquired P | 3,203 | $1.26 | $4.04K | 10,000 | Direct |
| 13 Aug, 2026 | Jeffrey Chuenhong Kuo | Chief Financial Officer | Acquired P | 10,000 | $1.36 | $13.60K | 693,130 | Direct |
| 10 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Disposed C | 50,000 | — | — | 31,848,071 | Indirect |
| 10 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Disposed C | 50,000 | — | — | 31,848,071 | Indirect |
| 10 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Acquired C | 50,000 | — | — | 50,000 | Indirect |
| 10 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Acquired C | 50,000 | — | — | 50,000 | Indirect |
| 10 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Disposed S | 50,000 | $1.29 | $64.35K | 0 | Indirect |
| 10 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Disposed S | 50,000 | $1.29 | $64.35K | 0 | Indirect |
| 10 Aug, 2026 | Gavin Turner | Director, TenPercentOwner | Disposed C | 50,000 | — | — | 31,848,071 | Indirect |
| 10 Aug, 2026 | Gp Iii, Llc Mainsail | TenPercentOwner | Disposed C | 50,000 | — | — | 31,848,071 | Indirect |
| 18 Jun, 2026 | Jennifer Noel Harris | Director | Disposed S | 20,020 | $1.07 | $21.42K | 232,302 | Direct |
| 22 Jun, 2026 | Jennifer Noel Harris | Director | Disposed S | 18,336 | $1.03 | $18.89K | 213,966 | Direct |