| Sep 22, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.74 | $36K@ $3.74 | 199,451 | Form 4 |
| Sep 21, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.80 | $37K@ $3.80 | 209,173 | Form 4 |
| Sep 18, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 34,978 | $3.67 | $128K@ $3.67 | 218,895 | Form 4 |
| Sep 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Conversion of derivativeCode C · direct | 190,977 | — | — | 253,873 | Form 4 |
| Sep 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Shares withheld for tax or exercise priceCode F · direct | 33,407 | $3.95 | $132K@ $3.95 | 62,896 | Form 4 |
| Sep 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 14,238 | — | — | 96,303 | Form 4 |
| Sep 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,556 | — | — | 82,065 | Form 4 |
| Sep 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,862 | — | — | 56,509 | Form 4 |
| Aug 6, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $4.55 | $44K@ $4.55 | 30,647 | Form 4 |
| Aug 5, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $4.31 | $42K@ $4.31 | 40,369 | Form 4 |
| Aug 4, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $4.42 | $43K@ $4.42 | 50,091 | Form 4 |
| Jul 8, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.90 | $38K@ $3.90 | 59,813 | Form 4 |
| Jul 7, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $4.00 | $39K@ $4.00 | 69,535 | Form 4 |
| Jul 6, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.95 | $38K@ $3.95 | 79,257 | Form 4 |
| Jun 23, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.12 | $30K@ $3.12 | 88,979 | Form 4 |
| Jun 22, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.01 | $29K@ $3.01 | 98,701 | Form 4 |
| Jun 18, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 34,978 | $3.00 | $105K@ $3.00 | 108,423 | Form 4 |
| Jun 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Shares withheld for tax or exercise priceCode F · direct | 33,407 | $3.61 | $121K@ $3.61 | 143,401 | Form 4 |
| Jun 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 14,238 | — | — | 176,808 | Form 4 |
| Jun 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,556 | — | — | 162,570 | Form 4 |
| Jun 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,862 | — | — | 137,014 | Form 4 |
| May 7, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.23 | $31K@ $3.23 | 111,152 | Form 4 |
| May 6, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.06 | $30K@ $3.06 | 120,874 | Form 4 |
| May 5, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $3.09 | $30K@ $3.09 | 130,596 | Form 4 |
| Apr 6, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $2.07 | $20K@ $2.07 | 140,318 | Form 4 |
| Apr 2, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $1.86 | $18K@ $1.86 | 187,814 | Form 4 |
| Apr 1, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $1.90 | $18K@ $1.90 | 197,536 | Form 4 |
| Mar 20, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $2.17 | $21K@ $2.17 | 207,258 | Form 4 |
| Mar 19, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 9,722 | $2.38 | $23K@ $2.38 | 216,980 | Form 4 |
| Mar 18, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 34,364 | $2.57 | $88K@ $2.57 | 226,702 | Form 4 |
| Mar 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Shares withheld for tax or exercise priceCode F · direct | 33,836 | $2.83 | $96K@ $2.83 | 227,448 | Form 4 |
| Mar 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 14,238 | — | — | 261,284 | Form 4 |
| Mar 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,556 | — | — | 247,046 | Form 4 |
| Mar 15, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,862 | — | — | 221,490 | Form 4 |
| Feb 28, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Grant or awardCode A · direct | 227,800 | — | — | 227,800 | Form 4 |
| Feb 5, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $1.97 | $19K@ $1.97 | 33,618 | Form 4 |
| Feb 4, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $2.11 | $20K@ $2.11 | 43,340 | Form 4 |
| Feb 3, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $2.25 | $22K@ $2.25 | 53,062 | Form 4 |
| Jan 8, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $3.38 | $33K@ $3.38 | 62,784 | Form 4 |
| Jan 7, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $3.57 | $35K@ $3.57 | 72,506 | Form 4 |
| Jan 6, 2026 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,730 | $3.70 | $36K@ $3.70 | 82,228 | Form 4 |
| Dec 22, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $4.55 | $44K@ $4.55 | 91,958 | Form 4 |
| Dec 19, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 9,722 | $4.65 | $45K@ $4.65 | 101,680 | Form 4 |
| Dec 18, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · indirect | 22,762 | $4.74 | $108K@ $4.74 | 111,402 | Form 4 |
| Dec 15, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Shares withheld for tax or exercise priceCode F · direct | 25,495 | $5.20 | $133K@ $5.20 | 195,628 | Form 4 |
| Dec 15, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,557 | — | — | 221,123 | Form 4 |
| Dec 15, 2025 | ZIPCHIEF EXECUTIVE OFFICER | Option exerciseCode M · direct | 25,863 | — | — | 195,566 | Form 4 |
| Dec 2, 2025 | ZIPCHIEF EXECUTIVE OFFICER | GiftCode G · indirect | 118,812 | — | — | 134,164 | Form 4 |
| Dec 15, 2021 | ZIPCHIEF EXECUTIVE OFFICER | GiftCode G · direct | 20,292 | — | — | 150,040 | Form 4 |
| Oct 1, 2021 | ZIPCHIEF EXECUTIVE OFFICER | Open-market saleCode S · direct | 17,482 | $27.61 | $483K@ $27.61 | 170,332 | Form 4 |