Michael S. Sellberg
CIK 1624785 · View on SEC EDGAR ↗
Insider
First SEC filing: Dec. 10, 2014 · Latest: Dec. 10, 2014
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 2 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 1, 2017 | WK | A | 21,613 | — | — | 21,613 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 5, 2016 | WK | F | 4,447 | $12.41 | $55,187 | 61,405 Direct | -6.75% | Disposed | 513.8% (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 |
|---|---|---|---|---|---|---|---|
| Feb. 1, 2017 | WK | Employee Stock Option to Purchase Class A Common Stock [F1] | Class A Common Stock (21,613) | $12.40 | Feb. 1, 2027 | 21,613 | 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.