Form 4 for RPID RAPID MICRO BIOSYSTEMS, INC.
Accepted 2026-02-03 00:00:00 ET · period of report 2026-01-23 · accession 0001193125-26-036387 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DI | 2026-02-03 | 2026-01-23 | RPID | Longitude Prime Partners, LLC | 10% | X - OptEx | $0.05 | +629.0K | 4.04M | +18% | +$31.5K |
| DMI | 2026-02-03 | 2026-01-23+ | RPID | Longitude Prime Partners, LLC | 10% | S - Sale+OE | $4.36 | -108.7K | 104.0K | -51% | -$473.7K |
| DMI | 2026-02-03 | 2026-01-23 | RPID | Longitude Prime Partners, LLC | 10% | X - OptEx | $0.00 | -629.0K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2026-01-23 | X | A | 629,032 | $0.05 | 4,036,984 | I Held by Longitude Venture Partners II, L.P. | — | — | (F2) The securities are held directly by LVPII. Longitude Capital Partners II, LLC, ("LCPII"), the general partner of LVPII, may be deemed to have voting and dispositive power with respect to the shares held by LVPII. Patrick G. Enright and Juliet Tammenoms Bakker are the managing members of LCPII and may be deemed to share voting and dispositive power over the shares held by LVPII. Each of LCPII, Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. |
| 2 | Common | Class A Common Stock | 2026-01-23 | S | D | 7,739 | $4.06 | 4,029,245 | I Held by Longitude Venture Partners II, L.P. | — | — | (F2) The securities are held directly by LVPII. Longitude Capital Partners II, LLC, ("LCPII"), the general partner of LVPII, may be deemed to have voting and dispositive power with respect to the shares held by LVPII. Patrick G. Enright and Juliet Tammenoms Bakker are the managing members of LCPII and may be deemed to share voting and dispositive power over the shares held by LVPII. Each of LCPII, Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. |
| 3 | Common | Class A Common Stock | 2026-02-03 | S | D | 27,500 | $4.24 | 49,000 | I Held by Longitude Prime Fund, L.P. | — | — | (F3) The securities are held directly by Longitude Prime Fund, L.P. ("LPF"). Longitude Prime Partners, LLC ("LPP"), the general partner of LPF, may be deemed to have voting and dispositive power with respect to the shares held by LPF. Mr. Enright and Ms. Tammenoms Bakker are the managing members of LPP and may be deemed to have voting and dispositive power over the shares held by LPF. LPP and each of Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein. |
| 4 | Common | Class A Common Stock | 2026-02-02 | S | D | 27,500 | $4.25 | 76,500 | I Held by Longitude Prime Fund, L.P. | — | — | (F3) The securities are held directly by Longitude Prime Fund, L.P. ("LPF"). Longitude Prime Partners, LLC ("LPP"), the general partner of LPF, may be deemed to have voting and dispositive power with respect to the shares held by LPF. Mr. Enright and Ms. Tammenoms Bakker are the managing members of LPP and may be deemed to have voting and dispositive power over the shares held by LPF. LPP and each of Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein. |
| 5 | Common | Class A Common Stock | 2026-01-30 | S | D | 46,000 | $4.54 | 104,000 | I Held by Longitude Prime Fund, L.P. | — | — | (F3) The securities are held directly by Longitude Prime Fund, L.P. ("LPF"). Longitude Prime Partners, LLC ("LPP"), the general partner of LPF, may be deemed to have voting and dispositive power with respect to the shares held by LPF. Mr. Enright and Ms. Tammenoms Bakker are the managing members of LPP and may be deemed to have voting and dispositive power over the shares held by LPF. LPP and each of Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein. |
| 6 | Derivative | Class A Common Stock | 2026-01-23 | X | D | 129,032 | $0.00 | 0 | I Held by Longitude Venture Partners II, L.P. | $0.05 · — to 2028-01-17 | 129,032 Class A Common Stock | (F2) The securities are held directly by LVPII. Longitude Capital Partners II, LLC, ("LCPII"), the general partner of LVPII, may be deemed to have voting and dispositive power with respect to the shares held by LVPII. Patrick G. Enright and Juliet Tammenoms Bakker are the managing members of LCPII and may be deemed to share voting and dispositive power over the shares held by LVPII. Each of LCPII, Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. (F4) The warrant is immediately exercisable. |
| 7 | Derivative | Class A Common Stock | 2026-01-23 | X | D | 500,000 | $0.00 | 0 | I Held by Longitude Venture Partners II, L.P. | $0.05 · — to 2027-07-24 | 500,000 Class A Common Stock | (F2) The securities are held directly by LVPII. Longitude Capital Partners II, LLC, ("LCPII"), the general partner of LVPII, may be deemed to have voting and dispositive power with respect to the shares held by LVPII. Patrick G. Enright and Juliet Tammenoms Bakker are the managing members of LCPII and may be deemed to share voting and dispositive power over the shares held by LVPII. Each of LCPII, Mr. Enright and Ms. Tammenoms Bakker disclaim beneficial ownership of such securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein. (F4) The warrant is immediately exercisable. |