Brian J. Blaser
CIK 1492289 · President and CEO · last filed 2026-05-19
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$67.75M
Companies
5
Total Filings
62
Lifetime Open-Market Net
-$48.55M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| QDEL | President and CEO | 85,974 | $14.64 | $1.26M | $1.00M | 9 | 2026-05-19 |
| QTRX | Director | 19,049 | $3.13 | $59.7K | $0 | 2 | 2024-01-04 |
| Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Director | 54,393 | $0.04 | $2.3K | $394.7K | 5 | 2022-08-30 |
| Talis Biomedical Corp (TLIS) Delisted | President and CEO | — | $2.84 | — | $0 | 1 | 2021-12-02 |
| ABT | Executive Vice President | 580,807 | $114.38 | $66.43M | -$49.95M | 45 | 2019-05-24 |
Recent Filings · Page 2 of 7
62 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-01-09 | QTRX | Grant (A) | +16,102 | $0 | EDGAR |
| 2022-08-30 | Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-06-08 | Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Exer (M) | +7,333 | $0 | EDGAR |
| 2022-03-25 | Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Buy (P) | +47,060 | $197.4K | EDGAR |
| 2022-03-18 | Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Buy (P) | +47,060 | $197.4K | EDGAR |
| 2021-12-02 | Talis Biomedical Corp (TLIS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-10-20 | Rockley Photonics Holdings Ltd (RKLY.WS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-05-24 | ABT | Mixed | — | -$16.69M | EDGAR |
| 2019-03-04 | ABT | Mixed | −30,818 | -$2.40M | EDGAR |
| 2019-02-26 | ABT | Grant (A) | +28,405 | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.