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Juan Vera

CIK 1755495 · Chief Executive Officer · last filed 2025-11-04

Juan Vera is a Chief Executive Officer who has filed 20 SEC Form 4 insider transactions across 2 companies since 2018. The most recent filing, for MRKR, was dated Nov 4, 2025. Across all open-market trades the lifetime net is −$4.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $315.3K 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

$315.3K

Companies

2

Total Filings

20

Lifetime Open-Market Net

-$4.06M

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
MRKR Chief Executive Officer 267,184 $1.18 $315.3K $1000.0K 10 2025-11-04
Kalaris Therapeutics, Inc. (ALVR) Delisted Director 104,779 $9.81 $1.03M -$5.06M 10 2024-06-07

Recent Filings

20 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
2025-11-04 MRKR Grant (A) — $0 EDGAR
2025-02-14 MRKR Grant (A) — $0 EDGAR
2024-06-07 Kalaris Therapeutics, Inc. (ALVR) Delisted Grant (A) +35,000 $0 EDGAR
2023-05-12 Kalaris Therapeutics, Inc. (ALVR) Delisted Grant (A) +35,000 $0 EDGAR
2023-05-11 MRKR Grant (A) — $0 EDGAR
2023-03-01 MRKR Grant (A) — $0 EDGAR
2022-05-19 Kalaris Therapeutics, Inc. (ALVR) Delisted Grant (A) — $0 EDGAR
2022-03-28 MRKR Mixed +107,358 -$16.2K EDGAR
2022-02-22 MRKR Grant (A) — $0 EDGAR
2021-05-27 Kalaris Therapeutics, Inc. (ALVR) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 20
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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.