Lightspeed Venture Partners IX, L.P.
Ten-percent owner · NTSK, RBRK
As of 2026-09-16, Lightspeed Venture Partners IX, L.P. has 400 Form 4 transactions on record across 2 companies — 338 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-11 | NTSK | Sale | 10,621 @ $14.90 | $158K | −100.0% of holding | 0 | Form 4 |
| 2026-07-09 | NTSK | Sale | 219,075 @ $12.23 | $2.7M | −100.0% of holding | 0 | Form 4 |
| 2026-07-08 | NTSK | Sale | 10,621 @ $11.70 | $124K | −100.0% of holding | 0 | Form 4 |
| 2026-06-15 | NTSK | Sale | 336,173 @ $9.00 | $3.0M | −100.0% of holding | 0 | Form 4 |
| 2026-06-12 | NTSK | Sale | 1,313,827 @ $9.19 | $12.1M | −79.6% of holding | 336,173 | Form 4 |
395 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-10 | NTSK | Other acquisition | 3,034,693 | 0 | Form 4 |
| 2026-09-10 | NTSK | Other acquisition | 10,621 | 10,621 | Form 4 |
| 2026-09-10 | NTSK | Other acquisition | 792,813 | 0 | Form 4 |
| 2026-09-10 | NTSK | Other acquisition | 792,813 | 792,813 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 3,034,693 | Form 4 |
| 2026-09-10 | NTSK | Conversion | 3,034,693 | 14,161,900 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 0 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 0 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 219,075 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 0 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 219,075 | Form 4 |
| 2026-07-09 | NTSK | Conversion | 219,075 | 219,075 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.