Stuart A Kingsley
CIK 1369067 · President and CEO · last filed 2026-05-14
"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
$4.47M
Companies
7
Total Filings
36
Lifetime Open-Market Net
-$15.98M
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 |
|---|---|---|---|---|---|---|---|
| INDV | Director | 12,100 | $38.75 | $468.9K | $30.0K | 3 | 2026-05-14 |
| SRRK | President and CEO | 42,000 | $52.20 | $2.19M | $0 | 3 | 2021-02-03 |
| PRTO | Director | — | $28.15 | — | $0 | 4 | 2018-06-11 |
| MEDICINES CO /DE (MDCO) Delisted | President and COO | 11,386 | — | — | $0 | 2 | 2017-03-02 |
| BIIB | EVP, Global Comm. Operations | 8,771 | $206.32 | $1.81M | -$3.36M | 15 | 2015-02-25 |
| HOLOGIC INC (HOLX) Delisted | SVP, GYN Surgical | 36,032 | $76.01 | $2.74M | -$12.65M | 7 | 2009-11-17 |
| CYTYC CORP (CYTC) Delisted | President, Diagnostics Div. | — | — | — | $0 | 1 | 2007-01-25 |
Recent Filings · Page 3 of 4
36 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 |
|---|---|---|---|---|---|
| 2013-02-12 | BIIB | Mixed | +2,416 | -$278.2K | EDGAR |
| 2013-02-05 | BIIB | Mixed | +3,095 | -$234.5K | EDGAR |
| 2012-02-16 | BIIB | Sell (S) | −1,247 | -$147.9K | EDGAR |
| 2012-02-14 | BIIB | Mixed | +1,247 | -$68.2K | EDGAR |
| 2012-02-10 | BIIB | Grant (A) | — | $0 | EDGAR |
| 2012-02-08 | BIIB | Sell (S) | −3,110 | -$376.4K | EDGAR |
| 2012-02-03 | BIIB | Mixed | +3,110 | -$179.1K | EDGAR |
| 2009-11-17 | HOLOGIC INC (HOLX) Delisted | Tax (F) | −1,031 | -$16.1K | EDGAR |
| 2009-11-13 | HOLOGIC INC (HOLX) Delisted | Grant (A) | +5,159 | $0 | EDGAR |
| 2009-04-07 | HOLOGIC INC (HOLX) Delisted | Mixed | — | $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.