HDRN's three largest insider shareholders as of September 29, 2026 are Avi S Katz (Chairman, 10.02Mn shares), Avi S Katz (Chairman, 862.81K shares), Eric Scott Williams (Evp Of Engineering, 750.00K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Avi S Katz | Chairman | 862,811 | 0 | 862,811 | 27.8% | 04 Sep, 2026 |
| 2 | Eric Scott Williams | Evp Of Engineering | 750,000 | 0 | 750,000 | 24.2% | 10 Sep, 2026 |
| 3 | Kenneth Jr. Canavan | Chief Operating Officer | 500,000 | 0 | 500,000 | 16.1% | 04 Sep, 2026 |
| 4 | Rahul Shukla | Chief Financial Officer | 500,000 | 0 | 500,000 | 16.1% | 04 Sep, 2026 |
| 5 | Raluca Dinu | Director, TenPercentOwner | 154,895 | 0 | 154,895 | 5.0% | 13 Aug, 2026 |
| 6 | Adrian Zuckerman | Director | 67,395 | 0 | 67,395 | 2.2% | 13 Aug, 2026 |
| 7 | Raanan Horowitz | Director | 67,395 | 0 | 67,395 | 2.2% | 13 Aug, 2026 |
| 8 | Bryan Timm | Director | 67,395 | 0 | 67,395 | 2.2% | 13 Aug, 2026 |
| 9 | Ralph L. Jr Hunter | Director | 67,395 | 0 | 67,395 | 2.2% | 13 Aug, 2026 |
| 10 | Robert James Lewis | Director | 67,395 | 0 | 67,395 | 2.2% | 13 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Sep, 2026 | Eric Scott Williams | Evp Of Engineering | Acquired A | 750,000 | $1.88 | $1.41Mn | 750,000 | Direct |
| 02 Sep, 2026 | Avi S Katz | Chairman | Acquired A | 707,916 | $1.88 | $1.33Mn | 862,811 | Direct |
| 02 Sep, 2026 | Rahul Shukla | Chief Financial Officer | Acquired A | 500,000 | $1.88 | $940.00K | 500,000 | Direct |
| 02 Sep, 2026 | Kenneth Jr. Canavan | Chief Operating Officer | Acquired A | 500,000 | $1.88 | $940.00K | 500,000 | Direct |
| 11 Aug, 2026 | Raluca Dinu | Director, TenPercentOwner | Acquired A | 67,395 | $1.84 | $124.01K | 154,895 | Direct |
| 11 Aug, 2026 | Raanan Horowitz | Director | Acquired A | 67,395 | $1.84 | $124.01K | 67,395 | Direct |
| 11 Aug, 2026 | Avi S Katz | Chairman | Acquired A | 67,395 | $1.84 | $124.01K | 154,895 | Direct |
| 11 Aug, 2026 | Bryan Timm | Director | Acquired A | 67,395 | $1.84 | $124.01K | 67,395 | Direct |
| 11 Aug, 2026 | Adrian Zuckerman | Director | Acquired A | 67,395 | $1.84 | $124.01K | 67,395 | Direct |
| 11 Aug, 2026 | Ralph L. Jr Hunter | Director | Acquired A | 67,395 | $1.84 | $124.01K | 67,395 | Direct |
| 11 Aug, 2026 | Robert James Lewis | Director | Acquired A | 67,395 | $1.84 | $124.01K | 67,395 | Direct |
| 22 May, 2026 | Avi S Katz | Chairman | Acquired A | 87,500 | — | — | 87,500 | Direct |
| 22 May, 2026 | Avi S Katz | Chairman | Acquired A | 87,500 | — | — | 87,500 | Indirect |
| 22 May, 2026 | Avi S Katz | Chairman | Acquired A | 9,932,246 | — | — | 9,932,246 | Indirect |
| 22 May, 2026 | Avi S Katz | Chairman | Disposed M | 9,932,246 | — | — | 0 | Indirect |
| 22 May, 2026 | Avi S Katz | Chairman | Disposed J | 29,300 | — | — | 0 | Indirect |
| 22 May, 2026 | Avi S Katz | Chairman | Disposed J | 29,300 | — | — | 0 | Indirect |
| 16 Apr, 2026 | Avi S Katz | Ceo; Chairmain | Acquired A | 29,300 | — | — | 29,300 | Indirect |
| 16 Apr, 2026 | Avi S Katz | Ceo; Chairmain | Acquired A | 29,300 | — | — | 29,300 | Indirect |
| 21 Jan, 2026 | Avi S Katz | Ceo; Chairmain | Disposed S | 175,000 | — | — | 9,932,246 | Indirect |