Corso Joseph John
Officer · LASR
As of 2026-09-16, Corso Joseph John has 34 Form 4 transactions on record across 1 company — 17 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.
Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $6.3M
- Indirect $0
| LASR | direct | 162,200 sh | $6.3M |
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-04 | LASR | Sale | 3,524 @ $41.49 | $146K | −2.1% of holding | 162,200 | Form 4 |
| 2026-09-03 | LASR | Sale | 4,191 @ $40.69 | $171K | −2.5% of holding | 165,724 | Form 4 |
| 2026-06-04 | LASR | Sale | 3,817 @ $72.90 | $278K | −2.2% of holding | 169,915 | Form 4 |
| 2026-06-03 | LASR | Sale | 3,840 @ $77.99 | $299K | −2.2% of holding | 173,732 | Form 4 |
| 2026-05-20 | LASR | Sale | 19,090 @ $70.77 | $1.4M | −9.6% of holding | 179,109 | Form 4 |
| 2026-05-20 | LASR | Sale | 12,946 @ $69.98 | $906K | −6.1% of holding | 198,199 | Form 4 |
| 2026-05-20 | LASR | Sale | 1,903 @ $68.81 | $131K | −0.9% of holding | 211,145 | Form 4 |
| 2026-05-20 | LASR | Sale | 1,537 @ $71.36 | $110K | −0.9% of holding | 177,572 | Form 4 |
| 2026-05-19 | LASR | Sale | 20,243 @ $68.48 | $1.4M | −8.7% of holding | 213,048 | Form 4 |
| 2026-05-18 | LASR | Sale | 19,575 @ $70.82 | $1.4M | −7.7% of holding | 233,291 | Form 4 |
| 2026-05-15 | LASR | Sale | 18,445 @ $75.16 | $1.4M | −6.8% of holding | 252,451 | Form 4 |
| 2026-03-06 | LASR | Sale | 12,290 @ $60.39 | $742K | −6.7% of holding | 170,896 | Form 4 |
| 2026-03-05 | LASR | Sale | 13,038 @ $61.96 | $808K | −6.6% of holding | 183,186 | Form 4 |
| 2025-12-15 | LASR | Sale | 64,000 @ $36.30 | $2.3M | −24.4% of holding | 198,299 | Form 4 |
| 2025-12-15 | LASR | Sale | 2,075 @ $36.86 | $76K | −1.0% of holding | 196,224 | Form 4 |
| 2025-12-03 | LASR | Sale | 4,127 @ $33.78 | $139K | −1.5% of holding | 262,299 | Form 4 |
| 2025-09-05 | LASR | Sale | 3,588 @ $29.73 | $107K | −1.3% of holding | 265,418 | Form 4 |
| 2025-09-04 | LASR | Sale | 4,112 @ $29.14 | $120K | −1.5% of holding | 269,006 | Form 4 |
| 2025-08-25 | LASR | Sale | 26,093 @ $28.47 | $743K | −8.7% of holding | 273,118 | Form 4 |
| 2025-08-25 | LASR | Sale | 12,191 @ $27.92 | $340K | −3.9% of holding | 299,211 | Form 4 |
| 2025-08-22 | LASR | Sale | 8,007 @ $28.33 | $227K | −2.5% of holding | 311,402 | Form 4 |
| 2025-08-21 | LASR | Sale | 8,619 @ $26.49 | $228K | −2.6% of holding | 319,409 | Form 4 |
| 2025-08-20 | LASR | Sale | 8,894 @ $25.67 | $228K | −2.6% of holding | 328,028 | Form 4 |
| 2025-08-19 | LASR | Sale | 8,449 @ $26.28 | $222K | −2.4% of holding | 336,922 | Form 4 |
| 2025-08-18 | LASR | Sale | 5,991 @ $26.69 | $160K | −1.7% of holding | 345,371 | Form 4 |
| 2025-06-13 | LASR | Sale | 10,062 @ $17.62 | $177K | −5.7% of holding | 166,362 | Form 4 |
| 2025-03-04 | LASR | Sale | 4,182 @ $8.18 | $34K | −3.1% of holding | 131,956 | Form 4 |
| 2025-03-03 | LASR | Sale | 2,500 @ $9.24 | $23K | −1.8% of holding | 136,138 | Form 4 |
6 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-05-05 | LASR | Award / grant | 100,000 | 270,896 | Form 4 |
| 2025-08-13 | LASR | Award / grant | 100,000 | 351,362 | Form 4 |
| 2025-08-05 | LASR | Award / grant | 85,000 | 251,362 | Form 4 |
| 2025-06-02 | LASR | Withheld for tax | 6,705 | 176,424 | Form 4 |
| 2025-05-22 | LASR | Award / grant | 50,000 | 181,956 | Form 4 |
| 2025-03-03 | LASR | Withheld for tax | 10,506 | 138,638 | 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.