Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 100 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.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
June 15, 2026 RBBN A 100,000 · · 100,000 Direct · Acquired (price as of 2026-10-02)
June 15, 2026 RBBN A 150,000 · · 150,000 Direct · Acquired (price as of 2026-10-02)
June 15, 2026 RBBN A 250,000 · · 250,000 Direct · Acquired (price as of 2026-10-02)
May 15, 2026 RBBN M 38,578 · · 556,685 Direct +7.45% Acquired (price as of 2026-10-02)
May 15, 2026 RBBN F 20,650 $2.63 $54,310 536,035 Direct -3.71% Disposed -32.7% (price as of 2026-10-02)
May 15, 2026 RBBN M 52,743 · · 588,778 Direct +9.84% Acquired (price as of 2026-10-02)
May 15, 2026 RBBN F 28,233 $2.63 $74,253 560,545 Direct -4.80% Disposed -32.7% (price as of 2026-10-02)
May 15, 2026 RBBN M 83,335 · · 643,880 Direct +14.87% Acquired (price as of 2026-10-02)
May 15, 2026 RBBN F 44,609 $2.63 $117,322 599,271 Direct -6.93% Disposed -32.7% (price as of 2026-10-02)
May 15, 2026 RBBN M 38,578 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 15, 2026 RBBN M 52,743 · · 52,742 Direct -50.00% Disposed (price as of 2026-10-02)
May 15, 2026 RBBN M 83,335 · · 166,665 Direct -33.33% Disposed (price as of 2026-10-02)
April 17, 2026 RBBN M 25,815 · · 474,626 Direct +5.75% Acquired (price as of 2026-10-02)
April 17, 2026 RBBN F 13,818 $2.71 $37,447 460,808 Direct -2.91% Disposed -34.7% (price as of 2026-10-02)
April 17, 2026 RBBN M 42,753 · · 503,561 Direct +9.28% Acquired (price as of 2026-10-02)
April 17, 2026 RBBN F 22,884 $2.71 $62,016 480,677 Direct -4.54% Disposed -34.7% (price as of 2026-10-02)
April 17, 2026 RBBN M 80,546 · · 561,223 Direct +16.76% Acquired (price as of 2026-10-02)
April 17, 2026 RBBN F 43,116 $2.71 $116,844 518,107 Direct -7.68% Disposed -34.7% (price as of 2026-10-02)
April 17, 2026 RBBN M 25,815 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 17, 2026 RBBN M 42,753 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 17, 2026 RBBN M 80,546 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Oct. 17, 2025 RBBN M 25,816 · · 462,630 Direct +5.91% Acquired (price as of 2026-10-02)
Oct. 17, 2025 RBBN F 13,819 $3.81 $52,650 448,811 Direct -2.99% Disposed -53.5% (price as of 2026-10-02)
Oct. 17, 2025 RBBN M 25,816 · · 25,815 Direct -50.00% Disposed (price as of 2026-10-02)
May 16, 2025 RBBN M 52,742 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
May 16, 2025 RBBN F 28,232 $3.62 $102,200 436,814 Direct -6.07% Disposed -51.1% (price as of 2026-10-02)
May 16, 2025 RBBN M 52,742 · · 465,046 Direct +12.79% Acquired (price as of 2026-10-02)
May 15, 2025 RBBN A 60,654 · · 60,654 Direct · Acquired (price as of 2026-10-02)
May 15, 2025 RBBN A 100,000 · · 100,000 Direct · Acquired (price as of 2026-10-02)
May 15, 2025 RBBN A 150,000 · · 150,000 Direct · Acquired (price as of 2026-10-02)
May 15, 2025 RBBN A 105,485 · · 105,485 Direct · Acquired (price as of 2026-10-02)
May 15, 2025 RBBN A 250,000 · · 250,000 Direct · Acquired (price as of 2026-10-02)
April 18, 2025 RBBN M 26,709 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 18, 2025 RBBN F 14,297 $3.58 $51,183 412,304 Direct -3.35% Disposed -50.6% (price as of 2026-10-02)
April 18, 2025 RBBN M 26,709 · · 426,601 Direct +6.68% Acquired (price as of 2026-10-02)
April 17, 2025 RBBN M 25,815 · · 51,631 Direct -33.33% Disposed (price as of 2026-10-02)
April 17, 2025 RBBN F 13,818 $3.53 $48,778 399,892 Direct -3.34% Disposed -49.9% (price as of 2026-10-02)
April 17, 2025 RBBN M 25,815 · · 413,710 Direct +6.66% Acquired (price as of 2026-10-02)
March 15, 2025 RBBN M 64,308 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2025 RBBN M 32,799 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2025 RBBN F 34,424 $3.95 $135,975 387,895 Direct -8.15% Disposed -55.2% (price as of 2026-10-02)
March 15, 2025 RBBN M 64,308 · · 422,319 Direct +17.96% Acquired (price as of 2026-10-02)
March 15, 2025 RBBN F 17,557 $3.95 $69,350 358,011 Direct -4.67% Disposed -55.2% (price as of 2026-10-02)
March 15, 2025 RBBN M 32,799 · · 375,568 Direct +9.57% Acquired (price as of 2026-10-02)
Oct. 18, 2024 RBBN M 26,709 · · 26,709 Direct -50.00% Disposed (price as of 2026-10-02)
Oct. 18, 2024 RBBN F 14,297 $3.56 $50,897 344,787 Direct -3.98% Disposed -50.3% (price as of 2026-10-02)
Oct. 18, 2024 RBBN M 26,709 · · 359,044 Direct +8.04% Acquired (price as of 2026-10-02)
Oct. 17, 2024 RBBN M 25,816 · · 77,446 Direct -25.00% Disposed (price as of 2026-10-02)
Oct. 17, 2024 RBBN F 13,819 $3.38 $46,708 332,335 Direct -3.99% Disposed -47.6% (price as of 2026-10-02)
Oct. 17, 2024 RBBN M 25,816 · · 346,154 Direct +8.06% Acquired (price as of 2026-10-02)
May 15, 2024 RBBN A 48,523 · · 48,523 Direct · Acquired (price as of 2026-10-02)
May 15, 2024 RBBN A 72,785 · · 72,785 Direct · Acquired (price as of 2026-10-02)
May 15, 2024 RBBN A 52,742 · · 52,742 Direct · Acquired (price as of 2026-10-02)
April 18, 2024 RBBN M 26,709 · · 53,418 Direct -33.33% Disposed (price as of 2026-10-02)
April 18, 2024 RBBN F 14,297 $2.57 $36,743 320,338 Direct -4.27% Disposed -31.1% (price as of 2026-10-02)
April 18, 2024 RBBN M 26,709 · · 334,635 Direct +8.67% Acquired (price as of 2026-10-02)
April 17, 2024 RBBN M 23,743 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 17, 2024 RBBN F 12,709 $2.61 $33,170 333,587 Direct -3.67% Disposed -32.2% (price as of 2026-10-02)
April 17, 2024 RBBN M 23,743 · · 346,296 Direct +7.36% Acquired (price as of 2026-10-02)
April 17, 2024 RBBN M 25,721 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 17, 2024 RBBN M 51,633 · · 103,262 Direct -33.33% Disposed (price as of 2026-10-02)
April 17, 2024 RBBN F 40,348 $2.61 $105,308 307,926 Direct -11.59% Disposed -32.2% (price as of 2026-10-02)
April 17, 2024 RBBN M 25,721 · · 348,274 Direct +7.97% Acquired (price as of 2026-10-02)
April 17, 2024 RBBN M 51,633 · · 322,553 Direct +19.06% Acquired (price as of 2026-10-02)
March 15, 2024 RBBN M 3,059 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2024 RBBN M 7,965 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2024 RBBN F 5,900 $2.83 $16,697 270,920 Direct -2.13% Disposed -37.5% (price as of 2026-10-02)
March 15, 2024 RBBN M 3,059 · · 276,820 Direct +1.12% Acquired (price as of 2026-10-02)
March 15, 2024 RBBN M 7,965 · · 273,761 Direct +3.00% Acquired (price as of 2026-10-02)
Jan. 18, 2024 RBBN M 81,967 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Jan. 18, 2024 RBBN F 44,475 $2.84 $126,309 265,796 Direct -14.33% Disposed -37.7% (price as of 2026-10-02)
Jan. 18, 2024 RBBN M 81,967 · · 310,271 Direct +35.90% Acquired (price as of 2026-10-02)
Oct. 18, 2023 RBBN M 26,709 · · 80,127 Direct -25.00% Disposed (price as of 2026-10-02)
Oct. 18, 2023 RBBN F 14,297 $2.15 $30,739 228,304 Direct -5.89% Disposed -17.7% (price as of 2026-10-02)
Oct. 18, 2023 RBBN M 26,709 · · 242,601 Direct +12.37% Acquired (price as of 2026-10-02)
Sept. 15, 2023 RBBN M 7,964 · · 7,965 Direct -50.00% Disposed (price as of 2026-10-02)
Sept. 15, 2023 RBBN M 16,706 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Sept. 15, 2023 RBBN F 13,205 $2.83 $37,370 215,892 Direct -5.76% Disposed -37.5% (price as of 2026-10-02)
Sept. 15, 2023 RBBN M 7,964 · · 229,097 Direct +3.60% Acquired (price as of 2026-10-02)
Sept. 15, 2023 RBBN M 16,706 · · 221,133 Direct +8.17% Acquired (price as of 2026-10-02)
April 18, 2023 RBBN M 53,420 · · 106,836 Direct -33.33% Disposed (price as of 2026-10-02)
April 18, 2023 RBBN F 28,595 $2.74 $78,350 204,427 Direct -12.27% Disposed -35.4% (price as of 2026-10-02)
April 18, 2023 RBBN M 53,420 · · 233,022 Direct +29.74% Acquired (price as of 2026-10-02)
April 17, 2023 RBBN A 61,958 · · 61,958 Direct · Acquired (price as of 2026-10-02)
April 17, 2023 RBBN A 92,937 · · 92,937 Direct · Acquired (price as of 2026-10-02)
April 17, 2023 RBBN A 49,464 · · 49,464 Direct · Acquired (price as of 2026-10-02)
April 17, 2023 RBBN A 154,895 · · 154,895 Direct · Acquired (price as of 2026-10-02)
March 15, 2023 RBBN M 40,094 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2023 RBBN M 25,059 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
March 15, 2023 RBBN M 7,965 · · 15,929 Direct -33.33% Disposed (price as of 2026-10-02)
March 15, 2023 RBBN M 16,705 · · 16,705 Direct -50.00% Disposed (price as of 2026-10-02)
March 15, 2023 RBBN F 21,462 $3.71 $79,624 179,602 Direct -10.67% Disposed -52.3% (price as of 2026-10-02)
March 15, 2023 RBBN M 40,094 · · 201,064 Direct +24.91% Acquired (price as of 2026-10-02)
March 15, 2023 RBBN F 13,414 $3.71 $49,766 160,970 Direct -7.69% Disposed -52.3% (price as of 2026-10-02)
March 15, 2023 RBBN M 25,059 · · 174,384 Direct +16.78% Acquired (price as of 2026-10-02)
March 15, 2023 RBBN F 4,263 $3.71 $15,816 149,325 Direct -2.78% Disposed -52.3% (price as of 2026-10-02)
March 15, 2023 RBBN M 7,965 · · 153,588 Direct +5.47% Acquired (price as of 2026-10-02)
March 15, 2023 RBBN F 8,942 $3.71 $33,175 145,623 Direct -5.79% Disposed -52.3% (price as of 2026-10-02)
March 15, 2023 RBBN M 16,705 · · 154,565 Direct +12.12% Acquired (price as of 2026-10-02)
Jan. 17, 2023 RBBN A 81,967 · · 81,967 Direct · Acquired (price as of 2026-10-02)

Showing latest 100 of 133 transactions

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 15, 2026 RBBN PSUs Common Stock (100,000) · · 100,000 Acquired
June 15, 2026 RBBN Performance-Based RSUs (PSUs) Common Stock (150,000) · · 150,000 Acquired
June 15, 2026 RBBN Restructed Stock Unites (RSUs) Common Stock (250,000) · · 250,000 Acquired
May 15, 2026 RBBN PSUs Common Stock (38,578) · · 38,578 Disposed
May 15, 2026 RBBN RSUs Common Stock (52,743) · · 52,743 Disposed
May 15, 2026 RBBN RSUs Common Stock (83,335) · · 83,335 Disposed
April 17, 2026 RBBN Restricted Share Units (RSUs) Common Stock (25,815) · · 25,815 Disposed
April 17, 2026 RBBN Performance Share Units (PSUs) Common Stock (42,753) · · 42,753 Disposed
April 17, 2026 RBBN PSUs Common Stock (80,546) · · 80,546 Disposed
Oct. 17, 2025 RBBN Restricted Stock Units (RSUs) Common Stock (25,816) · · 25,816 Disposed
May 16, 2025 RBBN RSUs Common Stock (52,742) · · 52,742 Disposed
May 15, 2025 RBBN PSUs Common Stock (60,654) · · 60,654 Acquired
May 15, 2025 RBBN PSUs Common Stock (100,000) · · 100,000 Acquired
May 15, 2025 RBBN Performance-Based RSUs (PSUs) Common Stock (150,000) · · 150,000 Acquired
May 15, 2025 RBBN RSUs Common Stock (105,485) · · 105,485 Acquired
May 15, 2025 RBBN Restricted Stock Units (RSUs) Common Stock (250,000) · · 250,000 Acquired
April 18, 2025 RBBN RSUs Common Stock (26,709) · · 26,709 Disposed
April 17, 2025 RBBN Restricted Stock Units (RSUs) Common Stock (25,815) · · 25,815 Disposed
March 15, 2025 RBBN PSUs Common Stock (64,308) · · 64,308 Disposed
March 15, 2025 RBBN Performance Stock Units (PSUs) Common Stock (32,799) · · 32,799 Disposed
Oct. 18, 2024 RBBN RSUs Common Stock (26,709) · · 26,709 Disposed
Oct. 17, 2024 RBBN Restricted Stock Units (RSUs) Common Stock (25,816) · · 25,816 Disposed
May 15, 2024 RBBN PSUs Common Stock (48,523) · · 48,523 Acquired
May 15, 2024 RBBN Performance-Based RSUs (PSUs) Common Stock (72,785) · · 72,785 Acquired
May 15, 2024 RBBN Restricted Stock Units (RSUs) Common Stock (52,742) · · 52,742 Acquired
April 18, 2024 RBBN RSUs Common Stock (26,709) · · 26,709 Disposed
April 17, 2024 RBBN Performance Share Units (PSUs) Common Stock · · 23,743 Disposed
April 17, 2024 RBBN Performance Share Units (PSUs) Common Stock (25,721) · · 25,721 Disposed
April 17, 2024 RBBN Restricted Stock Units (RSUs) Common Stock (51,633) · · 51,633 Disposed
March 15, 2024 RBBN Performance Stock Units (PSUs) Common Stock (3,059) · · 3,059 Disposed
March 15, 2024 RBBN Restricted Stock Units (RSUs) Common Stock (7,965) · · 7,965 Disposed
Jan. 18, 2024 RBBN Restricted Stock Units (RSUs) Common Stock (81,967) · · 81,967 Disposed
Oct. 18, 2023 RBBN Restricted Stock Units (RSUs) Common Stock (26,709) · · 26,709 Disposed
Sept. 15, 2023 RBBN RSUs Common Stock (7,964) · · 7,964 Disposed
Sept. 15, 2023 RBBN Restricted Stock Units (RSUs) Common Stock (16,706) · · 16,706 Disposed
April 18, 2023 RBBN Restricted Stock Units (RSUs) Common Stock (53,420) · · 53,420 Disposed
April 17, 2023 RBBN PSUs Common Stock (61,958) · · 61,958 Acquired
April 17, 2023 RBBN PSUs Common Stock (92,937) · · 92,937 Acquired
April 17, 2023 RBBN Performance-Based RSUs (PSUs) Common Stock (46,464) · · 49,464 Acquired
April 17, 2023 RBBN RSUs Common Stock (154,895) · · 154,895 Acquired
March 15, 2023 RBBN RSUs Common Stock (40,094) · · 40,094 Disposed
March 15, 2023 RBBN Performance-Based Restricted Stock Units (PSUs) Common Stock (25,059) · · 25,059 Disposed
March 15, 2023 RBBN RSUs Common Stock (7,965) · · 7,965 Disposed
March 15, 2023 RBBN Restricted Stock Units (RSUs) Common Stock (16,705) · · 16,705 Disposed
Jan. 17, 2023 RBBN Restricted Stock Units (RSU) Common Stock (81,967) · · 81,967 Acquired
Sept. 15, 2022 RBBN Restricted Stock Unit (RSU) Common Stock (7,965) · · 7,965 Disposed
Sept. 15, 2022 RBBN Restricted Stock Units (RSU) Common Stock (16,706) · · 16,706 Disposed
June 15, 2022 RBBN PSU Common Stock (110,117) · · 110,117 Acquired
June 15, 2022 RBBN PSU Common Stock (64,308) · · 64,308 Acquired
June 15, 2022 RBBN Performance-Based Restricted Stock Unit (PSU) Common Stock (96,463) · · 96,463 Acquired
April 18, 2022 RBBN Restricted Stock Units (RSU) Common Stock (160,256) · · 160,256 Acquired
March 15, 2022 RBBN Restricted Stock Unit (RSU) Common Stock (16,706) · · 16,706 Disposed
March 15, 2022 RBBN Restricted Stock Units (RSU) Common Stock (15,931) · · 15,931 Disposed
Sept. 15, 2021 RBBN Restricted Stock Unit Common Stock (33,413) · · 33,413 Disposed
Sept. 15, 2021 RBBN Restricted Stock Units (RSU) Common Stock (129,717) · · 129,717 Disposed
March 15, 2021 RBBN Performance-Based Restricted Stock Units (PSUs) Common Stock · · 15,930 Acquired
March 15, 2021 RBBN Restricted Stock Units (RSUs) Common Stock (47,790) · · 47,790 Acquired
March 15, 2021 RBBN Performance-Based Restricted Stock Units (PSUs) Common Stock (47,790) · · 47,790 Acquired
March 15, 2021 RBBN PSUs Common Stock (28,674) · · 28,674 Acquired
March 15, 2021 RBBN PSUs Common Stock (19,116) · · 19,116 Acquired
Feb. 26, 2021 RBBN Performance Based Restricted Stock Units (PSUs) Common Stock (25,059) · · 25,059 Acquired
Feb. 15, 2021 RBBN Performance-Based Restricted Stock Units (PSUs) Common Stock (133,333) · Jan. 31, 2022 133,333 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 4 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Sept. 16, 2020 RBBN Restricted Stock Units (RSUs)→ Common Stock (100,236) 100,236 Direct
Sept. 16, 2020 RBBN RSUs→ Common Stock (129,717) 129,717 Direct
Sept. 16, 2020 RBBN Performance-Based Restricted Stock Units (PSUs)→ Common Stock (40,094) 40,094 Direct
Sept. 16, 2020 RBBN PSUs→ Common Stock (133,333) 133,333 Direct