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Alfred Sandrock

CIK 1577061 · President and CEO · last filed 2026-04-03

Alfred Sandrock is a President and CEO who has filed 75 SEC Form 4 insider transactions across 3 companies since 2013. The most recent filing shows the insider sold $44.5K of VYGR on Apr 3, 2026. Across all open-market trades the lifetime net is −$17.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.7M across reported positions.

"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

$3.72M

Companies

3

Total Filings

75

Lifetime Open-Market Net

-$17.93M

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
VYGR President and CEO 472,549 $3.30 $1.56M -$620.4K 15 2026-04-03
BIIB Head of Research & Development 10,169 $212.55 $2.16M -$17.31M 46 2021-06-09
NBIX Director — $154.23 — $0 5 2019-05-23

Recent Filings

75 filings
Insider 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
2026-04-03 VYGR Sell (S) −11,511 -$44.5K EDGAR
2026-04-02 VYGR Notice (144) −11,511 -$44.6K EDGAR
2026-02-26 VYGR Sell (S) −14,197 -$53.8K EDGAR
2026-02-24 VYGR Notice (144) −14,197 -$53.9K EDGAR
2026-02-20 VYGR Sell (S) −11,732 -$40.0K EDGAR
2026-02-18 VYGR Notice (144) −11,732 -$40.0K EDGAR
2026-02-11 VYGR Sell (S) −12,192 -$46.1K EDGAR
2026-02-10 VYGR Notice (144) −12,192 -$46.1K EDGAR
2026-02-10 VYGR Grant (A) +86,250 $0 EDGAR
2025-04-04 VYGR Sell (S) −10,885 -$37.3K EDGAR
Showing 1–10 of 75
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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.