William R. Langton
CIK 1542477 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 23, 2012 · Latest: Feb. 23, 2012
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 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
3 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 2, 2012 | PRLB | S 10b5-1 | 8,250 | $34.00 | $280,500 | 0 Direct | -100.00% | Disposed | 134.2% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Oct. 2, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock (8,250) | $2.66 | Sept. 11, 2016 | 8,250 | Disposed |
| May 7, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock (8,480) | $30.58 | May 7, 2022 | 8,480 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.