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R Sanders Williams

CIK 1375347 · last filed 2026-05-29

R Sanders Williams is a corporate insider who has filed 101 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for TNYA, was dated May 29, 2026. Across all open-market trades the lifetime net is −$3.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.1M across reported positions. 54 SEC filings were submitted jointly with LABORATORY CORP OF AMERICA HOLDINGS.

"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

$5.06M

Companies

4

Total Filings

101

Lifetime Open-Market Net

-$3.93M

Filer Profile

Reported Address
C/O TENAYA THERAPEUTICS, INC.
171 OYSTER POINT BLVD, SUITE 500
SOUTH SAN FRANCISCO, CA 94080
Related Filers
LABORATORY CORP OF AMERICA HOLDINGS — 54 joint filings, latest 2024-02-08
MYERS SQUIBB CO BRISTOL — 28 joint filings, latest 2013-02-05
AMGEN INC — 20 joint filings, latest 2023-05-23
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
TNYA Director — $0.69 — $0 5 2026-05-29
LH Director 8,120 $322.19 $2.62M -$3.12M 51 2024-02-08
AMGN Director 6,240 $390.99 $2.44M -$813.3K 19 2023-05-23
BMY Director — $64.61 — $0 26 2013-02-05

Recent Filings

101 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
2026-05-29 TNYA Grant (A) — $0 EDGAR
2025-05-30 TNYA Grant (A) — $0 EDGAR
2024-10-21 TNYA Grant (A) — $0 EDGAR
2024-02-08 LH Mixed +947 $0 EDGAR
2023-06-12 TNYA Grant (A) — $0 EDGAR
2023-05-23 AMGN Grant (A) +939 $0 EDGAR
2023-02-14 LH Exer (M) +742 $0 EDGAR
2023-02-09 LH Grant (A) — $0 EDGAR
2022-08-22 AMGN Sell (S) −200 -$50.0K EDGAR
2022-06-13 TNYA Grant (A) — $0 EDGAR
Showing 1–10 of 101
Page 1 of 11
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.