Spring Mountain Capital G.P., LLC - 12 Oct 2021 Form 4 Insider Report for IsoPlexis Corp

Footnote F1

Shares of Series A Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer, Series A-2 Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer, Series B Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer, Series B-2 Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer, Series C Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer and Series C-2 Redeemable Convertible Preferred Stock, par value $0.001, of the Issuer (collectively, the "Preferred Stock") were convertible on a one-for-eight basis into shares of Common Stock of the Issuer at the option of the holder at any time and automatically converted upon the closing of the Issuer's initial public offering. The Preferred Stock had no expiration date.

Footnote F2

The securities are directly held by SMC Growth Capital Partners II, LP ("GCII"). SMC Growth Capital II GP, LLC, a Delaware limited liability company ("GCII GP"), is the general partner of GCII, and Spring Mountain Capital G.P., LLC, a Delaware limited liability company ("SMC GP"), is the managing member of GCII GP. John L. Steffens and Gregory P. Ho each serves as a managing member of SMC GP. Each of GCII GP, SMC GP, Mr. Steffens and Mr. Ho may be deemed to indirectly hold the securities held by GCII. GCII holds voting and dispositive power over the securities it holds. Each of Mr. Steffens, Mr. Ho, GCII GP and SMC GP disclaims beneficial ownership of these securities, except to the extent of their respective pecuniary interests therein.

Footnote F3

The securities are directly held by SMC Private Equity Holdings, LP ("PEH"). SMC Private Equity Holdings G.P., LLC, a Delaware limited liability company ("PEH GP"), is the general partner of PEH, and SMC GP is the managing member of PEH GP. Mr. Steffens and Mr. Ho each serves as a managing member of SMC GP. Each of PEH GP, SMC GP, Mr. Steffens and Mr. Ho may be deemed to indirectly hold the securities held by PEH. PEH holds voting and dispositive power over the securities it holds. Each of Mr. Steffens, Mr. Ho, PEH GP and SMC GP disclaims beneficial ownership of these securities, except to the extent of their respective pecuniary interests therein.

Footnote F4

The securities are directly held by SMC Holdings II, LP ("Holdings"). SMC Holdings II G.P., LLC, a Delaware limited liability company ("Holdings GP"), is the general partner of Holdings. Mr. Steffens and Mr. Ho each serves as a managing member of Holdings GP. Each of Holdings GP, Mr. Steffens and Mr. Ho may be deemed to indirectly hold the securities held by Holdings. Holdings holds voting and dispositive power over the securities it holds. Each of Mr. Steffens, Mr. Ho and Holdings GP disclaims beneficial ownership of these securities, except to the extent of their respective pecuniary interests therein.

Footnote F5

Includes 33,296 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F6

Includes 21,151 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F7

Includes 41,641 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F8

Includes 64,257 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F9

Includes 57,275 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F10

Includes 22,960 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F11

Includes 44,899 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F12

Includes 31,941 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F13

Includes 36,113 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F14

Includes 17,286 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F15

Includes 22,960 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.

Footnote F16

Includes 4,082 shares of Common Stock issued per dividends accrued to but not including October 12, 2021.