David Pfeffer
CIK 1756269 · View on SEC EDGAR ↗
Insider
First SEC filing: June 9, 2026 · Latest: June 9, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 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
4 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 17, 2022 | CIRC | P | 16,332 | $1.01 | $16,495 | 20,000 Direct | +445.26% | Acquired | -98.3% (price as of 2026-08-19) |
| Aug. 17, 2022 | CIRC | P | 3,668 | $1.00 | $3,668 | 20,000 Direct | +22.46% | Acquired | -98.3% (price as of 2026-08-19) |
| Aug. 17, 2022 | CIRC | P | 16,332 | $1.01 | $16,495 | 36,216 Direct | +82.14% | Acquired | -98.3% (price as of 2026-08-19) |
| Aug. 17, 2022 | CIRC | P | 3,668 | $1.00 | $3,668 | 36,216 Direct | +11.27% | Acquired | -98.3% (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 |
|---|---|---|---|---|---|---|---|
| March 12, 2026 | CIRC | Restricted Stock Units | Common Stock (161,290) | $0.00 | June 18, 2034 | 161,290 | Acquired |
| June 18, 2024 | CIRC | Restricted Stock Units | Common Stock (161,290) | $0.01 | Dec. 18, 2029 | 161,290 | Acquired |
| Jan. 13, 2022 | CIRC | STOCK OPTION [F1] | Common Stock (75,000) | $1.73 | Jan. 13, 2027 | 75,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.