Mark Barrocas
CIK 1987144 · Chief Executive Officer · last filed 2026-11-06
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
SN price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
89 A STREET, #100
NEEDHAM, MA 02494
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SN | Chief Executive Officer | 1,620,199 | $226.39 | $366.80M | -$187.00M | 9 | 2026-11-06 |
Recent Filings · Page 3 of 3
30 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-10-25 | SN | Notice (144) Officer · Planned Oct 25, 2024 · 10b5-1 plan Sold: listed on the Oct 28, 2024 notice |
−3,007 | -$331.1K | EDGAR |
| 2024-10-24 | SN | Notice (144) Officer · Planned Oct 24, 2024 · 10b5-1 plan Sold: listed on the Oct 25, 2024 notice |
−841 | -$92.6K | EDGAR |
| 2024-10-23 | SN | Notice (144) Officer · Planned Oct 23, 2024 · 10b5-1 plan Sold: listed on the Oct 24, 2024 notice |
−1,795 | -$198.8K | EDGAR |
| 2024-10-22 | SN | Notice (144) Officer · Planned Oct 22, 2024 · 10b5-1 plan Sold: listed on the Oct 23, 2024 notice |
−9,745 | -$1.07M | EDGAR |
| 2024-10-21 | SN | Notice (144) Officer · Planned Oct 21, 2024 · 10b5-1 plan Sold: listed on the Oct 22, 2024 notice |
−19,689 | -$2.17M | EDGAR |
| 2024-10-09 | SN | Notice (144) Officer · Planned Oct 9, 2024 · 10b5-1 plan Sold: listed on the Oct 21, 2024 notice |
−9,059 | -$996.8K | EDGAR |
| 2024-10-08 | SN | Notice (144) Officer · Planned Oct 8, 2024 · 10b5-1 plan Sold: listed on the Oct 9, 2024 notice |
−32,283 | -$3.55M | EDGAR |
| 2024-10-04 | SN | Notice (144) Officer · Planned Oct 4, 2024 · 10b5-1 plan Sold: listed on the Oct 8, 2024 notice |
−20,000 | -$2.20M | EDGAR |
| 2023-11-17 | SN | Notice (144) Officer, Director · Planned Nov 17, 2023 No sale on file |
−54,452 | -$2.46M | EDGAR |
| 2023-11-15 | SN | Notice (144) Officer, Director · Planned Nov 15, 2023 Sold: listed on the Nov 17, 2023 notice |
−56,548 | -$2.54M | EDGAR |
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, and an amended or cancelled notice is not listed. 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. Someone who is no longer an officer or director (or never was) files no Form 4, so for them a sale shows up only on a later notice, which lists the seller's sales from the 3 months before it. "No sale on file" means neither record shows one; a dash in Net $ means the value filed on the notice doesn't fit the stock's price (likely a typo).
Sales Reported Only on Form 144
10 sales · $16.81M| Sold | Symbol | Shares | Proceeds | Avg Price | Listed On |
|---|---|---|---|---|---|
| 2025-07-23 | SN | 30,429 | $3.66M | $120.14 | 2025-07-25 |
| 2024-10-25 | SN | 3,007 | $331.1K | $110.11 | 2024-10-28 |
| 2024-10-24 | SN | 841 | $92.6K | $110.05 | 2024-10-25 |
| 2024-10-23 | SN | 1,795 | $198.8K | $110.77 | 2024-10-24 |
| 2024-10-22 | SN | 9,745 | $1.07M | $110.21 | 2024-10-23 |
| 2024-10-21 | SN | 19,689 | $2.17M | $110.01 | 2024-10-22 |
| 2024-10-09 | SN | 9,059 | $996.8K | $110.03 | 2024-10-21 |
| 2024-10-08 | SN | 32,283 | $3.55M | $110.05 | 2024-10-09 |
| 2024-10-04 | SN | 20,000 | $2.20M | $110.00 | 2024-10-08 |
| 2023-11-15 | SN | 56,548 | $2.54M | $45.00 | 2023-11-17 |