BlackSky Technology BKSY Insider Ownership

NYSE BKSY
$21.30 +2.18 (+11.40%)
At close: Nov 6, 2026 · 4:00 PM EST

Insider Holdings by Owner

2.59Mn Shares
Brian E O'Toole1.02Mn39.5%
Henry Edward Dubois474.93K18.3%
Christiana L Lin415.68K16.0%
David Didomenico180.57K7.0%
William D. Porteous88.38K3.4%
Other insiders (6)410.54K15.8%

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
6.85%
▼-0.230% pp QoQ
Shares Held by Insiders
2.63Mn
filed for Sep 2026
▼-3.25% QoQ
Shares Outstanding
38.42Mn
38,424,000 shares
Direct Holdings
2.57Mn
Indirect: 63.45K
Net Open-Market Trades
-138.56K
net sold · -$2.99Mn in Sep 2026
Insiders Holding Shares
11
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Open-Market Insider Trades

Bought Sold
Latest quarter —
Net over range —
Net-buying quarters —

Insider Ownership Summary

Over the past 12 months, BlackSky Technology insiders sold $5.66 million of stock on the open market (248.24K shares) and made no open-market purchases.

Form 4 Holdings

Insiders Holding BKSY

Insiders 11
Shares held 2.59Mn
Of outstanding 6.75%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Brian E O'Toole Ceo And President 1,023,396 0 1,023,396 39.5% 22 Oct, 2026
2 Henry Edward Dubois Chief Financial Officer 474,931 0 474,931 18.3% 22 Oct, 2026
3 Christiana L Lin General Counsel Cao 415,680 0 415,680 16.0% 22 Oct, 2026
4 David Didomenico Director 180,568 0 180,568 7.0% 15 Sep, 2026
5 William D. Porteous Director 88,378 0 88,378 3.4% 02 Oct, 2026
6 James R Tolonen Director 86,906 0 86,906 3.4% 02 Oct, 2026
7 Susan M. Gordon Director 85,612 0 85,612 3.3% 02 Oct, 2026
8 Magid M Abraham Director 73,985 0 73,985 2.9% 02 Oct, 2026
9 Timothy M. Harvey Director 64,722 0 64,722 2.5% 15 Sep, 2025
10 Johan G Broekhuysen Chief Financial Officer 56,393 0 56,393 2.2% 28 Feb, 2022
11 Tracy Ward Svp Controller 42,923 0 42,923 1.7% 12 Mar, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

231 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
20 Oct, 2026 Henry Edward Dubois Chief Financial Officer Disposed S 4,000 $16.85 $67.40K 474,931 Direct
20 Oct, 2026 Brian E O'Toole Ceo And President Disposed S 20,000 $16.86 $337.20K 1,023,396 Direct
20 Oct, 2026 Christiana L Lin General Counsel Cao Disposed S 6,000 $16.86 $101.16K 415,680 Direct
30 Sep, 2026 Susan M. Gordon Director Acquired A 1,055 $0.00 $0 85,612 Direct
30 Sep, 2026 Magid M Abraham Director Acquired A 1,055 $0.00 $0 73,985 Direct
30 Sep, 2026 James R Tolonen Director Acquired A 1,055 $0.00 $0 86,906 Direct
30 Sep, 2026 William D. Porteous Director Acquired A 1,055 $0.00 $0 88,378 Direct
21 Sep, 2026 Christiana L Lin General Counsel Cao Disposed S 6,000 $23.10 $138.60K 421,680 Direct
21 Sep, 2026 Brian E O'Toole Ceo And President Disposed S 20,000 $22.88 $457.60K 1,043,396 Direct
21 Sep, 2026 Henry Edward Dubois Chief Financial Officer Disposed S 4,000 $22.97 $91.88K 478,931 Direct
11 Sep, 2026 Henry Edward Dubois Chief Financial Officer Disposed S 15,225 $20.95 $318.96K 482,931 Direct
11 Sep, 2026 Christiana L Lin General Counsel Cao Disposed S 13,052 $20.95 $273.44K 427,680 Direct
11 Sep, 2026 Brian E O'Toole Ceo And President Disposed S 56,280 $20.95 $1.18Mn 1,063,396 Direct
11 Sep, 2026 Susan M. Gordon Director Acquired A 7,278 $0.00 $0 84,557 Direct
11 Sep, 2026 William D. Porteous Director Acquired A 8,733 $0.00 $0 87,323 Direct
11 Sep, 2026 David Didomenico Director Acquired A 7,278 $0.00 $0 180,568 Direct
11 Sep, 2026 James R Tolonen Director Acquired A 8,005 $0.00 $0 85,851 Direct
11 Sep, 2026 Magid M Abraham Director Acquired A 7,278 $0.00 $0 72,930 Direct
09 Sep, 2026 Brian E O'Toole Ceo And President Disposed S 20,000 $21.83 $436.60K 1,119,676 Direct
28 Aug, 2026 Henry Edward Dubois Chief Financial Officer Disposed S 4,000 $23.78 $95.12K 498,156 Direct