Peter Feinberg
CIK 1870076 · View on SEC EDGAR ↗
Insider
First SEC filing: Sept. 13, 2021 · Latest: June 11, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 10 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
10 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2021 | IMRX | P | 33,333 | $15.00 | $499,995 | 115,441 Indirect | +40.60% | Acquired | -65.2% (price as of 2026-08-19) |
| Aug. 3, 2021 | IMRX | P | 129,167 | $15.00 | $1,937,505 | 476,568 Indirect | +37.18% | Acquired | -65.2% (price as of 2026-08-19) |
| Aug. 3, 2021 | IMRX | P | 129,167 | $15.00 | $1,937,505 | 386,492 Indirect | +50.20% | Acquired | -65.2% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 3, 2021 | IMRX | Series B Preferred Stock | Class A Common Stock (30,646) | — | — | 30,646 | Disposed |
| Aug. 3, 2021 | IMRX | Series B Preferred Stock | Class A Common Stock (30,646) | — | — | 30,646 | Disposed |
| Aug. 3, 2021 | IMRX | Series B Preferred Stock | Class A Common Stock (30,646) | — | — | 30,646 | Disposed |
| Aug. 3, 2021 | IMRX | Series A Preferred Stock | Class A Common Stock (51,462) | — | — | 51,462 | Disposed |
| Aug. 3, 2021 | IMRX | Series A Preferred Stock | Class A Common Stock (92,509) | — | — | 92,509 | Disposed |
| Aug. 3, 2021 | IMRX | Series A Preferred Stock | Class A Common Stock (102,926) | — | — | 102,926 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 18 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Sept. 13, 2021 | IMRX | Class A Common Stock | 123,753 | Indirect |
| Sept. 13, 2021 | IMRX | Class A Common Stock | 224,293 | Indirect |
| Sept. 13, 2021 | IMRX | Stock Option→ Class A Common Stock (111,153) | 111,153 | Direct |
| Sept. 13, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (102,926) | 102,926 | Indirect |
| Sept. 13, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (92,509) | 92,509 | Indirect |
| Sept. 13, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (51,462) | 51,462 | Indirect |
| Sept. 13, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |
| Sept. 13, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |
| Sept. 13, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |
| July 29, 2021 | IMRX | Class A Common Stock | 123,753 | Indirect |
| July 29, 2021 | IMRX | Class A Common Stock | 224,246 | Indirect |
| July 29, 2021 | IMRX | Stock Option→ Class A Common Stock (111,153) | 111,153 | Direct |
| July 29, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (102,926) | 102,926 | Indirect |
| July 29, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (92,509) | 92,509 | Indirect |
| July 29, 2021 | IMRX | Series A Preferred Stock→ Class A Common Stock (51,462) | 51,462 | Indirect |
| July 29, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |
| July 29, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |
| July 29, 2021 | IMRX | Series B Preferred Stock→ Class A Common Stock (30,646) | 30,646 | Indirect |