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Sandra Horning

CIK 1638709 · last filed 2026-06-23

Sandra Horning is a corporate insider who has filed 36 SEC Form 4 insider transactions across 6 companies since 2020. The most recent filing, for OLMA, was dated Jun 23, 2026. Current disclosed insider exposure totals $20.7M 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

$20.71M

Companies

6

Total Filings

36

Lifetime Open-Market Net

$0

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
OLMA Director — $11.62 — $0 8 2026-06-23
RVMD Director 97,765 $183.86 $17.98M $0 2 2026-06-23
MRNA Director 18,585 $55.80 $1.04M $0 9 2026-05-08
GILD Director 6,293 $134.32 $845.3K $0 10 2026-05-04
RVMDW Director 96,574 $8.84 $853.7K $0 3 2025-06-30
EQRx, Inc. (EQRXW) Delisted Director 0 $0.05 $0 $0 4 2023-11-09

Recent Filings

36 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
2026-06-23 OLMA Grant (A) — $0 EDGAR
2026-06-23 RVMD Grant (A) +1,191 $0 EDGAR
2026-05-08 MRNA Grant (A) — $0 EDGAR
2026-05-04 GILD Grant (A) +1,146 $0 EDGAR
2026-05-04 MRNA Exer (M) +16,233 $0 EDGAR
2025-06-30 RVMDW Grant (A) +3,142 $0 EDGAR
2025-06-13 OLMA Grant (A) — $0 EDGAR
2025-05-08 GILD Grant (A) +1,516 $0 EDGAR
2025-05-01 MRNA Mixed +979 $0 EDGAR
2024-06-28 RVMDW Grant (A) +2,945 $0 EDGAR
Showing 1–10 of 36
Page 1 of 4
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.