Juan Vera
CIK 1755495 · Chief Executive Officer · last filed 2025-11-04
"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 · Page 2 of 2
20 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 |
|---|---|---|---|---|---|
| 2021-03-18 | MRKR | Buy (P) | +571,428 | $1000.0K | EDGAR |
| 2021-03-03 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Sell (S) | −63,836 | -$2.45M | EDGAR |
| 2021-02-23 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Sell (S) | −36,404 | -$1.51M | EDGAR |
| 2021-02-19 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Sell (S) | −8,942 | -$364.4K | EDGAR |
| 2021-02-18 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Sell (S) | −17,860 | -$736.3K | EDGAR |
| 2021-02-12 | MRKR | Grant (A) | — | $0 | EDGAR |
| 2020-08-06 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Conv (C) | +2,436,773 | $0 | EDGAR |
| 2020-07-31 | Kalaris Therapeutics, Inc. (ALVR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-03-12 | MRKR | Grant (A) | — | $0 | EDGAR |
| 2018-10-23 | MRKR | Grant (A) | — | $0 | EDGAR |
Showing 11–20 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.
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.