As of September 12, 2026, the three largest insider holders of GBDC are Lawrence E Golub (Chairman, 2.02Mn shares), Lawrence E Golub (Chairman, 1.68Mn shares), Lawrence E Golub (Chairman, 1.18Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Lawrence E Golub | Chairman | 0 | 2,018,880 | 2,018,880 | 76.5% | 09 Sep, 2024 |
| 2 | William M Iv Webster | Director | 0 | 414,507 | 414,507 | 15.7% | 23 Dec, 2024 |
| 3 | Anita J. Rival | Director | 95,000 | 26,291 | 121,291 | 4.6% | 12 Aug, 2024 |
| 4 | John Thomas Baily | Director | 83,108 | 0 | 83,108 | 3.2% | 13 Sep, 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 |
|---|---|---|---|---|---|---|---|---|
| 07 Aug, 2026 | Lawrence E Golub | Director | Disposed S | 1,676,387 | $13.06 | $21.89Mn | 0 | Indirect |
| 07 Aug, 2026 | David Golub | Chairman Ceo | Disposed S | 1,676,387 | $13.06 | $21.89Mn | 0 | Indirect |
| 27 May, 2025 | Lawrence E Golub | Chairman | Disposed S | 3,860,458 | $15.13 | $58.41Mn | 0 | Indirect |
| 27 May, 2025 | Lawrence E Golub | Chairman | Disposed S | 2,183,032 | $15.13 | $33.03Mn | 0 | Indirect |
| 27 May, 2025 | Lawrence E Golub | Chairman | Disposed S | 16,481 | $15.13 | $249.35K | 0 | Indirect |
| 27 May, 2025 | Lawrence E Golub | Chairman | Acquired P | 6,059,971 | $15.13 | $91.69Mn | 6,059,971 | Indirect |
| 27 May, 2025 | Lawrence E Golub | Chairman | Disposed G | 6,059,971 | $15.13 | $91.69Mn | 0 | Indirect |
| 20 Dec, 2024 | William M Iv Webster | Director | Disposed G | 7,100 | $0.00 | $0 | 414,507 | Indirect |
| 20 Dec, 2024 | William M Iv Webster | Director | Disposed G | 7,100 | $0.00 | $0 | 414,507 | Indirect |
| 20 Dec, 2024 | William M Iv Webster | Director | Disposed G | 7,100 | $0.00 | $0 | 414,507 | Indirect |
| 20 Dec, 2024 | William M Iv Webster | Director | Disposed G | 7,100 | $0.00 | $0 | 414,507 | Indirect |
| 11 Sep, 2024 | John Thomas Baily | Director | Disposed D | 1 | $14.68 | $11 | 83,108 | Direct |
| 05 Sep, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $14.91 | $298.20K | 1,998,880 | Indirect |
| 06 Sep, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $14.78 | $295.60K | 2,018,880 | Indirect |
| 03 Sep, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $14.91 | $298.20K | 1,958,880 | Indirect |
| 04 Sep, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $14.94 | $298.80K | 1,978,880 | Indirect |
| 29 Aug, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $15.15 | $303.00K | 1,918,880 | Indirect |
| 30 Aug, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $14.86 | $297.20K | 1,938,880 | Indirect |
| 28 Aug, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $15.04 | $300.80K | 1,898,880 | Indirect |
| 26 Aug, 2024 | Lawrence E Golub | Chairman | Acquired P | 20,000 | $15.01 | $300.20K | 1,858,880 | Indirect |