Lightspeed Management Company, L.L.C.: PERSONALIS INC (PSNL): Quarterly 13F Position History
As of Q1 2026, Lightspeed Management Company, L.L.C. reported 8,160,734 shares of PERSONALIS INC (PSNL), worth $52.0M and representing 5.3% of its 13F equity book. The position first appeared in Q4 2024 and has been disclosed across 6 13F-HR filings in Pactolio's tracked window.
- 8,160,734Shares Held (Latest Filing)
- $52.0MReported Market Value (Latest Filing)
- 5.3%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- -$13.0MQuarter-over-Quarter Value Change
- 8,160,734Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 6 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 8,160,734 | 0 | — | $52.0M | 5.3% | $6.4 |
| Q4 2025 | 8,160,734 | 0 | — | $65.0M | 4.7% | $8.0 |
| Q3 2025 | 8,160,734 | 0 | — | $53.2M | 16.5% | $6.5 |
| Q2 2025 | 8,160,734 | 0 | — | $53.5M | 22.4% | $6.6 |
| Q1 2025 | 8,160,734 | 0 | — | $28.6M | 21.0% | $3.5 |
| Q4 2024 | 8,160,734 | — | — | $47.2M | 13.2% | $5.8 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Lightspeed Management Company, L.L.C. first disclose a PSNL position in 13F-HR filings?
Lightspeed Management Company, L.L.C. first reported PERSONALIS INC (PSNL) on its 13F-HR filing for the period ending 2024-12-31 (Q4 2024). The position has appeared on 6 reported quarters within Pactolio's tracked window.
What was Lightspeed Management Company, L.L.C.'s most recent quarter-over-quarter share-count change in PSNL?
Lightspeed Management Company, L.L.C. held the same 8,160,734 shares of PSNL between Q4 2025 and Q1 2026 — the reported share count was unchanged quarter-over-quarter.
Does the implied price-per-share represent Lightspeed Management Company, L.L.C.'s cost basis in PSNL?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.