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2seventy bio, Inc. SEC Filings

Filed On Filing
14 Aug 2025 SCHEDULE 13G/A
14 Aug 2025 SCHEDULE 13G/A
13 Aug 2025 SCHEDULE 13G/A
06 Jun 2025 SCHEDULE 13G/A
23 May 2025 15-12G
15 May 2025 Form 4: Glickman Sarah Js, Director

Returned 12,050 shares to the issuer · Disposed of 15,602 shares (Tender Offer) · Disposed of 24,100 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Casdin Capital, Llc, Director and 3 others

Disposed of 2,022,625 shares (Tender Offer) ($10.1M) · Disposed of 45,450 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Leschly Nick, Director

Returned 335,964 shares to the issuer · Disposed of 953,875 shares (Tender Offer) · Disposed of 469,000 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Eatwell Victoria, Chief Financial Officer

Returned 401,111 shares to the issuer · Disposed of 43,276 shares (Tender Offer) · Disposed of 112,000 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Snow Jessica, Chief Operating Officer

Returned 247,230 shares to the issuer · Disposed of 11,064 shares (Tender Offer) · Disposed of 89,050 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Wei Lin, Director

Returned 17,583 shares to the issuer · Disposed of 15,267 shares (Tender Offer) · Disposed of 24,100 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Maus Marcela V., Director

Returned 12,050 shares to the issuer · Disposed of 11,702 shares (Tender Offer) · Disposed of 24,100 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Newton Charles W., Director

Returned 17,092 shares to the issuer · Disposed of 5,533 shares (Tender Offer) · Disposed of 45,450 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Torres Denice, Director

Returned 12,050 shares to the issuer · Disposed of 19,510 shares (Tender Offer) · Disposed of 24,100 Stock Options (Right to buy) (Disposition to Issuer)

15 May 2025 Form 4: Baird William D Iii, Director

Returned 1,002,825 shares to the issuer · Disposed of 118,209 shares (Tender Offer) · Disposed of 358,000 Stock Options (Right to buy) (Disposition to Issuer)

13 May 2025 EFFECT
13 May 2025 POS AM
13 May 2025 S-8 POS
13 May 2025 S-8 POS
13 May 2025 S-8 POS

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