Patterson Mark
Officer · CSCO
As of 2026-09-27, Patterson Mark has 30 Form 4 transactions on record across 1 company — 27 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 August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $27.6M
- Indirect $0
| CSCO | direct | 258,595 sh | $27.6M |
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 | CSCO | Sale | 1,795 @ $108.87 | $195K | −1.1% of holding | 165,778 | Form 4 |
| 2026-08-14 | CSCO | Sale | 3,788 @ $111.60 | $423K | −2.2% of holding | 169,627 | Form 4 |
| 2026-08-14 | CSCO | Sale | 904 @ $110.60 | $100K | −0.5% of holding | 173,415 | Form 4 |
| 2026-08-14 | CSCO | Sale | 500 @ $112.52 | $56K | −0.3% of holding | 169,127 | Form 4 |
| 2026-06-11 | CSCO | Sale | 2,546 @ $121.75 | $310K | −1.4% of holding | 177,717 | Form 4 |
| 2026-06-11 | CSCO | Sale | 1,600 @ $118.36 | $189K | −0.9% of holding | 182,214 | Form 4 |
| 2026-06-11 | CSCO | Sale | 1,100 @ $120.44 | $132K | −0.6% of holding | 180,263 | Form 4 |
| 2026-06-11 | CSCO | Sale | 1,100 @ $117.60 | $129K | −0.6% of holding | 183,814 | Form 4 |
| 2026-06-11 | CSCO | Sale | 851 @ $119.44 | $102K | −0.5% of holding | 181,363 | Form 4 |
| 2026-06-11 | CSCO | Sale | 200 @ $122.39 | $24K | −0.1% of holding | 177,517 | Form 4 |
| 2026-05-15 | CSCO | Sale | 2,005 @ $117.34 | $235K | −1.0% of holding | 193,025 | Form 4 |
| 2026-05-15 | CSCO | Sale | 1,712 @ $118.16 | $202K | −0.9% of holding | 191,313 | Form 4 |
| 2026-05-15 | CSCO | Sale | 1,495 @ $116.65 | $174K | −0.8% of holding | 195,030 | Form 4 |
| 2026-05-15 | CSCO | Sale | 300 @ $115.08 | $35K | −0.2% of holding | 196,525 | Form 4 |
| 2026-03-20 | CSCO | Sale | 2,501 @ $78.26 | $196K | −1.2% of holding | 200,041 | Form 4 |
| 2026-03-20 | CSCO | Sale | 2,391 @ $77.68 | $186K | −1.2% of holding | 202,542 | Form 4 |
| 2025-11-18 | CSCO | Sale | 48,632 @ $77.16 | $3.8M | −17.5% of holding | 229,181 | Form 4 |
| 2025-11-18 | CSCO | Sale | 20,284 @ $77.63 | $1.6M | −8.9% of holding | 208,897 | Form 4 |
| 2025-08-19 | CSCO | Sale | 7,230 @ $66.98 | $484K | −4.4% of holding | 157,868 | Form 4 |
11 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-16 | CSCO | Award / grant | 92,817 | 258,595 | Form 4 |
| 2026-09-10 | CSCO | Withheld for tax | 1,553 | 167,573 | Form 4 |
| 2026-08-10 | CSCO | Withheld for tax | 4,066 | 174,319 | Form 4 |
| 2026-06-10 | CSCO | Withheld for tax | 6,399 | 184,914 | Form 4 |
| 2026-05-10 | CSCO | Withheld for tax | 3,640 | 196,825 | Form 4 |
| 2026-02-10 | CSCO | Withheld for tax | 1,840 | 204,933 | Form 4 |
| 2025-11-21 | CSCO | Withheld for tax | 2,626 | 206,271 | Form 4 |
| 2025-11-10 | CSCO | Withheld for tax | 44,714 | 277,813 | Form 4 |
| 2025-11-10 | CSCO | Award / grant | 74,492 | 322,527 | Form 4 |
| 2025-09-16 | CSCO | Award / grant | 89,646 | 247,514 | Form 4 |
| 2025-08-10 | CSCO | Withheld for tax | 4,691 | 165,098 | 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.